TAB KeyDown/KeyUp events that are used in ToolGui are still propagated to the UI/changing focus.

2023.1.X <div class="MuiChip-root MuiChip-filled MuiChip-sizeSmall MuiChip-colorSuccess MuiChip-filledSuccess mui-1yh32qq"> Fixed Fixed in Unity 2023.1.0a5