When the Inspector UI mode is set for UIToolkit, the override marker against a public scripted variable is not updated after using _*Apply All*_ from the Overrides dropdown. The Inspector will show the correct override status after forcing a UI repaint.

Repro:

0. In Project Settings ensure Inspector is using UIToolkit, not IMGUI.
1. Create instance and make it a Prefab.
2. Add a script with public int {_}MyInteger{_}.
3. Override _MyInteger_ value and notice override marker.
4. "Apply All" from the Overrides dropdown and notice the override marker is still visible.
5. Resize the width of the Inspector to force a repaint and notice that the override marker disappears.

This behaviour only seems to occur for publicly exposed scripted variables. It does not occur at all with IMGUI. 

Expected behaviour: The override marker disappears after clicking Apply All. 

Actual behaviour: The override marker remains until the Inspector UI is forced to repaint.