My DF Title Bar Buttons do not reliably vanish after closing an application (which auto-closes all of its child windows). The title bar buttons DO immediately vanish if I click the Red X to close a particular window.

The more complex the application (multiple windows with many objects) that I exit, the longer it takes for the DF title bar buttons to clear.

For windows that have closed, if I hover the mouse cursor over the ghost Title Bar Buttons, then that Title Bar button group will immediately vanish (but others continue showing on the monitor). If I simply wait (up to 20-30 seconds), then the title bar buttons slowly begin vanishing (one group at a time).

My expectation is that the title bar buttons should immediately vanish when the window is closed by the application (as opposed to closing a particular window by clicking the red x).

Are there any settings, registry changes, or other ways to diagnose this issue or to speed up the related DF's / Windows cleanup cycles?

Using Windows 11, DF 10.0 Beta 15.

Thinkorswim.exe, Directory Opus, EditPad Lite, LinqPad, Visual Studio Code
Closing via the red x is fine. Problem occurs when closing an application's windows from task bar icon.