Merge pull request #2868 from Krypton-Suite/V110-2862-bug-form-border-resize-flicker

* Form border resize flicker (V110)

Author: PWagner1

Documents/Changelog/Changelog.md

@@ -4,6 +4,7 @@
 
 ## 2026-11-xx - Build 2611 (V110 Nightly) - November 2026
 
+* Resolved [#2862](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2862), Form border resize flicker
 * Implemented [#595](https://github.com/Krypton-Suite/Standard-Toolkit/issues/595), Detachable Ribbons - Added ability to detach `KryptonRibbon` into a floating window with `AllowDetach` property, `Detach()` and `Reattach()` methods, and `RibbonDetached`/`RibbonReattached` events. See [Detachable Ribbons Documentation](Detachable-Ribbons-Feature.md) for comprehensive details.
 * Implemented [#2898](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2898), `KryptonHScrollBar` & `KryptonVScrollBar` - Part of #2658
 * Resolved [#2910](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2910), `KryptonComboBox` override Font property causes form designer error

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

@@ -225,6 +225,13 @@ public KryptonForm()
         // Yes, we want to be drawn double buffered by default
         base.DoubleBuffered = true;
 
+#if NET10_0_OR_GREATER
+        // Fix for issue #2862: .NET 10 introduced FormCornerPreference which causes flicker
+        // during resize when using custom chrome. Set to DoNotRound since KryptonForm
+        // handles its own border rendering with custom chrome.
+        FormCornerPreference = FormCornerPreference.DoNotRound;
+#endif
+
         // Create storage objects
         ButtonSpecs = new FormButtonSpecCollection(this);
         var buttonSpecsFixed = new FormFixedButtonSpecCollection(this);