diff --git a/browser_tests/tests/propertiesPanel/propertiesPanelPosition.spec.ts b/browser_tests/tests/propertiesPanel/propertiesPanelPosition.spec.ts
new file mode 100644
index 000000000..ee2c85eda
--- /dev/null
+++ b/browser_tests/tests/propertiesPanel/propertiesPanelPosition.spec.ts
@@ -0,0 +1,86 @@
+import { expect } from '@playwright/test'
+
+import { comfyPageFixture as test } from '../../fixtures/ComfyPage'
+
+test.describe('Properties panel position', () => {
+  test.beforeEach(async ({ comfyPage }) => {
+    // Open a sidebar tab to ensure sidebar is visible
+    await comfyPage.menu.nodeLibraryTab.open()
+    await comfyPage.actionbar.propertiesButton.click()
+  })
+
+  test('positions on the right when sidebar is on the left', async ({
+    comfyPage
+  }) => {
+    await comfyPage.setSetting('Comfy.Sidebar.Location', 'left')
+    await comfyPage.nextFrame()
+
+    const propertiesPanel = comfyPage.page.getByTestId('properties-panel')
+    const sidebar = comfyPage.page.locator('.side-bar-panel').first()
+
+    await expect(propertiesPanel).toBeVisible()
+    await expect(sidebar).toBeVisible()
+
+    const propsBoundingBox = await propertiesPanel.boundingBox()
+    const sidebarBoundingBox = await sidebar.boundingBox()
+
+    expect(propsBoundingBox).not.toBeNull()
+    expect(sidebarBoundingBox).not.toBeNull()
+
+    // Properties panel should be to the right of the sidebar
+    expect(propsBoundingBox!.x).toBeGreaterThan(
+      sidebarBoundingBox!.x + sidebarBoundingBox!.width
+    )
+  })
+
+  test('positions on the left when sidebar is on the right', async ({
+    comfyPage
+  }) => {
+    await comfyPage.setSetting('Comfy.Sidebar.Location', 'right')
+    await comfyPage.nextFrame()
+
+    const propertiesPanel = comfyPage.page.getByTestId('properties-panel')
+    const sidebar = comfyPage.page.locator('.side-bar-panel').first()
+
+    await expect(propertiesPanel).toBeVisible()
+    await expect(sidebar).toBeVisible()
+
+    const propsBoundingBox = await propertiesPanel.boundingBox()
+    const sidebarBoundingBox = await sidebar.boundingBox()
+
+    expect(propsBoundingBox).not.toBeNull()
+    expect(sidebarBoundingBox).not.toBeNull()
+
+    // Properties panel should be to the left of the sidebar
+    expect(propsBoundingBox!.x + propsBoundingBox!.width).toBeLessThan(
+      sidebarBoundingBox!.x
+    )
+  })
+
+  test('close button icon updates based on sidebar location', async ({
+    comfyPage
+  }) => {
+    const propertiesPanel = comfyPage.page.getByTestId('properties-panel')
+
+    // When sidebar is on the left, panel is on the right
+    await comfyPage.setSetting('Comfy.Sidebar.Location', 'left')
+    await comfyPage.nextFrame()
+
+    await expect(propertiesPanel).toBeVisible()
+    const closeButtonLeft = propertiesPanel
+      .locator('button[aria-pressed]')
+      .locator('i')
+    await expect(closeButtonLeft).toBeVisible()
+    await expect(closeButtonLeft).toHaveClass(/lucide--panel-right/)
+
+    // When sidebar is on the right, panel is on the left
+    await comfyPage.setSetting('Comfy.Sidebar.Location', 'right')
+    await comfyPage.nextFrame()
+
+    const closeButtonRight = propertiesPanel
+      .locator('button[aria-pressed]')
+      .locator('i')
+    await expect(closeButtonRight).toBeVisible()
+    await expect(closeButtonRight).toHaveClass(/lucide--panel-left/)
+  })
+})
diff --git a/src/components/LiteGraphCanvasSplitterOverlay.vue b/src/components/LiteGraphCanvasSplitterOverlay.vue
index 4d56e623b..4a7695d18 100644
--- a/src/components/LiteGraphCanvasSplitterOverlay.vue
+++ b/src/components/LiteGraphCanvasSplitterOverlay.vue
@@ -22,29 +22,38 @@
         state-storage="local"
         @resizestart="onResizestart"
       >
+        <!-- First panel: sidebar when left, properties when right -->
         <SplitterPanel
-          v-if="sidebarLocation === 'left' && !focusMode"
-          :class="
-            cn(
-              'side-bar-panel bg-comfy-menu-bg pointer-events-auto',
-              sidebarPanelVisible && 'min-w-78'
-            )
+          v-if="
+            !focusMode && (sidebarLocation === 'left' || rightSidePanelVisible)
           "
-          :min-size="10"
+          :class="
+            sidebarLocation === 'left'
+              ? cn(
+                  'side-bar-panel bg-comfy-menu-bg pointer-events-auto',
+                  sidebarPanelVisible && 'min-w-78'
+                )
+              : 'bg-comfy-menu-bg pointer-events-auto'
+          "
+          :min-size="sidebarLocation === 'left' ? 10 : 15"
           :size="20"
-          :style="{
-            display:
-              sidebarPanelVisible && sidebarLocation === 'left'
-                ? 'flex'
-                : 'none'
-          }"
+          :style="firstPanelStyle"
+          :role="sidebarLocation === 'left' ? 'complementary' : undefined"
+          :aria-label="
+            sidebarLocation === 'left' ? t('sideToolbar.sidebar') : undefined
+          "
         >
           <slot
-            v-if="sidebarPanelVisible && sidebarLocation === 'left'"
+            v-if="sidebarLocation === 'left' && sidebarPanelVisible"
             name="side-bar-panel"
           />
+          <slot
+            v-else-if="sidebarLocation === 'right'"
+            name="right-side-panel"
+          />
         </SplitterPanel>
 
+        <!-- Main panel (always present) -->
         <SplitterPanel :size="80" class="flex flex-col">
           <slot name="topmenu" :sidebar-panel-visible />
 
@@ -73,38 +82,33 @@
           </Splitter>
         </SplitterPanel>
 
+        <!-- Last panel: properties when left, sidebar when right -->
         <SplitterPanel
-          v-if="sidebarLocation === 'right' && !focusMode"
-          :class="
-            cn(
-              'side-bar-panel pointer-events-auto',
-              sidebarPanelVisible && 'min-w-78'
-            )
+          v-if="
+            !focusMode && (sidebarLocation === 'right' || rightSidePanelVisible)
           "
-          :min-size="10"
+          :class="
+            sidebarLocation === 'right'
+              ? cn(
+                  'side-bar-panel bg-comfy-menu-bg pointer-events-auto',
+                  sidebarPanelVisible && 'min-w-78'
+                )
+              : 'bg-comfy-menu-bg pointer-events-auto'
+          "
+          :min-size="sidebarLocation === 'right' ? 10 : 15"
           :size="20"
-          :style="{
-            display:
-              sidebarPanelVisible && sidebarLocation === 'right'
-                ? 'flex'
-                : 'none'
-          }"
+          :style="lastPanelStyle"
+          :role="sidebarLocation === 'right' ? 'complementary' : undefined"
+          :aria-label="
+            sidebarLocation === 'right' ? t('sideToolbar.sidebar') : undefined
+          "
         >
+          <slot v-if="sidebarLocation === 'left'" name="right-side-panel" />
           <slot
-            v-if="sidebarPanelVisible && sidebarLocation === 'right'"
+            v-else-if="sidebarLocation === 'right' && sidebarPanelVisible"
             name="side-bar-panel"
           />
         </SplitterPanel>
-
-        <!-- Right Side Panel - independent of sidebar -->
-        <SplitterPanel
-          v-if="rightSidePanelVisible && !focusMode"
-          class="bg-comfy-menu-bg pointer-events-auto"
-          :min-size="15"
-          :size="20"
-        >
-          <slot name="right-side-panel" />
-        </SplitterPanel>
       </Splitter>
     </div>
   </div>
@@ -117,6 +121,7 @@ import Splitter from 'primevue/splitter'
 import type { SplitterResizeStartEvent } from 'primevue/splitter'
 import SplitterPanel from 'primevue/splitterpanel'
 import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
 
 import { useSettingStore } from '@/platform/settings/settingStore'
 import { useBottomPanelStore } from '@/stores/workspace/bottomPanelStore'
@@ -128,6 +133,7 @@ const workspaceStore = useWorkspaceStore()
 const settingStore = useSettingStore()
 const rightSidePanelStore = useRightSidePanelStore()
 const sidebarTabStore = useSidebarTabStore()
+const { t } = useI18n()
 const sidebarLocation = computed<'left' | 'right'>(() =>
   settingStore.get('Comfy.Sidebar.Location')
 )
@@ -159,12 +165,25 @@ function onResizestart({ originalEvent: event }: SplitterResizeStartEvent) {
 }
 
 /*
- * Force refresh the splitter when right panel visibility changes to recalculate the width
+ * Force refresh the splitter when right panel visibility or sidebar location changes
+ * to recalculate the width and panel order
  */
 const splitterRefreshKey = computed(() => {
-  return rightSidePanelVisible.value
-    ? 'main-splitter-with-right-panel'
-    : 'main-splitter'
+  return `main-splitter${rightSidePanelVisible.value ? '-with-right-panel' : ''}-${sidebarLocation.value}`
+})
+
+const firstPanelStyle = computed(() => {
+  if (sidebarLocation.value === 'left') {
+    return { display: sidebarPanelVisible.value ? 'flex' : 'none' }
+  }
+  return undefined
+})
+
+const lastPanelStyle = computed(() => {
+  if (sidebarLocation.value === 'right') {
+    return { display: sidebarPanelVisible.value ? 'flex' : 'none' }
+  }
+  return undefined
 })
 </script>
 
diff --git a/src/components/rightSidePanel/RightSidePanel.vue b/src/components/rightSidePanel/RightSidePanel.vue
index 50dc9de33..4eb2ae31b 100644
--- a/src/components/rightSidePanel/RightSidePanel.vue
+++ b/src/components/rightSidePanel/RightSidePanel.vue
@@ -9,6 +9,7 @@ import TabList from '@/components/tab/TabList.vue'
 import Button from '@/components/ui/button/Button.vue'
 import { SubgraphNode } from '@/lib/litegraph/src/litegraph'
 import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
+import { useSettingStore } from '@/platform/settings/settingStore'
 import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
 import { useRightSidePanelStore } from '@/stores/workspace/rightSidePanelStore'
 import type { RightSidePanelTab } from '@/stores/workspace/rightSidePanelStore'
@@ -22,11 +23,23 @@ import SubgraphEditor from './subgraph/SubgraphEditor.vue'
 
 const canvasStore = useCanvasStore()
 const rightSidePanelStore = useRightSidePanelStore()
+const settingStore = useSettingStore()
 const { t } = useI18n()
 
 const { selectedItems } = storeToRefs(canvasStore)
 const { activeTab, isEditingSubgraph } = storeToRefs(rightSidePanelStore)
 
+const sidebarLocation = computed<'left' | 'right'>(() =>
+  settingStore.get('Comfy.Sidebar.Location')
+)
+
+// Panel is on the left when sidebar is on the right, and vice versa
+const panelIcon = computed(() =>
+  sidebarLocation.value === 'right'
+    ? 'icon-[lucide--panel-left]'
+    : 'icon-[lucide--panel-right]'
+)
+
 const hasSelection = computed(() => selectedItems.value.length > 0)
 
 const selectedNodes = computed((): LGraphNode[] => {
@@ -160,7 +173,7 @@ function handleTitleCancel() {
             :aria-label="t('rightSidePanel.togglePanel')"
             @click="closePanel"
           >
-            <i class="icon-[lucide--panel-right] size-4" />
+            <i :class="cn(panelIcon, 'size-4')" />
           </Button>
         </div>
       </div>
diff --git a/src/locales/en/main.json b/src/locales/en/main.json
index af70861a3..a1f15efe8 100644
--- a/src/locales/en/main.json
+++ b/src/locales/en/main.json
@@ -648,6 +648,7 @@
     "box": "Box"
   },
   "sideToolbar": {
+    "sidebar": "Sidebar",
     "themeToggle": "Toggle Theme",
     "helpCenter": "Help Center",
     "logout": "Logout",