* "Populate from Base" task freezes Visual Studio (V105 LTS)

Documents/Changelog/Changelog.md

@@ -4,6 +4,7 @@
 
 ## 2026-04-20 - Build 2604 (Version 105-LTS - Patch 2) - April 2026
 
+* Resolved [#2927](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2927), "Populate from Base" task freezes Visual Studio
 * Resolved [#2132](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2132), Drag feedback artifact: when dragging a dockable page, a small dark artefact appeared in the top-left corner of the screen. The drop feedback window (`DropSolidWindow`) was created at (0,0); it is now positioned off-screen initially and when no drop target is matched.
 * Implemented [#2952](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2962), Set license header via `editorconfig`
 * Resolved [#2935](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2935), Maximized MDI window form border drawn on wrong monitor (secondary monitor); `DropSolidWindow` now uses screen coordinates for `DesktopBounds`; non-client border painting uses a DC compatible with the window's monitor

Source/Krypton Components/Krypton.Toolkit/Controls Toolkit/KryptonCustomPaletteBase.cs

@@ -1966,6 +1966,16 @@ public void ResetToDefaults(bool silent)
             {
                 ResetOperation(null);
             }
+            else if (this.InDesignMode())
+            {
+                // In design mode (e.g. VS designer), run synchronously to avoid PerformOperation
+                // deadlock/freeze with ModalWaitDialog and worker thread (see issue #2927)
+                ResetOperation(null);
+
+                KryptonMessageBox.Show("Reset of palette is completed.",
+                    "Palette Reset",
+                    KryptonMessageBoxButtons.OK);
+            }
             else
             {
                 // Perform the reset operation on a separate worker thread
@@ -2008,6 +2018,16 @@ public void PopulateFromBase(bool silent)
             {
                 PopulateFromBaseOperation(null);
             }
+            else if (this.InDesignMode())
+            {
+                // In design mode (e.g. VS designer), run synchronously to avoid PerformOperation
+                // deadlock/freeze with ModalWaitDialog and worker thread (see issue #2927)
+                PopulateFromBaseOperation(null);
+
+                KryptonMessageBox.Show("Relevant values have been populated.",
+                    "Populate Values",
+                    KryptonMessageBoxButtons.OK);
+            }
             else
             {
                 // Perform the reset operation on a separate worker thread