diff --git a/source/blender/editors/screen/area.cc b/source/blender/editors/screen/area.cc
index 879bcf3dea9..7f3a98037b6 100644
--- a/source/blender/editors/screen/area.cc
+++ b/source/blender/editors/screen/area.cc
@@ -3378,6 +3378,16 @@ void ED_region_panels_init(wmWindowManager *wm, ARegion *region)
 {
   UI_view2d_region_reinit(&region->v2d, V2D_COMMONVIEW_PANELS_UI, region->winx, region->winy);
 
+  /* Place scroll bars to the left if left-aligned, right if right-aligned. */
+  if (region->alignment & RGN_ALIGN_LEFT) {
+    region->v2d.scroll &= ~V2D_SCROLL_RIGHT;
+    region->v2d.scroll |= V2D_SCROLL_LEFT;
+  }
+  else if (region->alignment & RGN_ALIGN_RIGHT) {
+    region->v2d.scroll &= ~V2D_SCROLL_LEFT;
+    region->v2d.scroll |= V2D_SCROLL_RIGHT;
+  }
+
   wmKeyMap *keymap = WM_keymap_ensure(
       wm->defaultconf, "View2D Buttons List", SPACE_EMPTY, RGN_TYPE_WINDOW);
   WM_event_add_keymap_handler(&region->runtime->handlers, keymap);