Hi Edwin.
My OS is Win 10 22H2, newly installed.
Also MCUXpresso is downloaded in last version.
I made some changes in Dark mode, but none in Light.
I did not have these problems with the older version of MCUXpresso.
With the new version, the response time when stepping in Debug mode has also increased significantly.
I created a new Workspace in a new directory, imported an existing project, the behavior is the same.
Classic works, in Light and Dark the mentioned errors appear.
I'm attaching a video record . (It's my first recording, be forgiving). It's interesting that in the video the cursor moves over the tabs, in fact it was right on top of them.
The error occurs immediately after setting the mode and restarting the IDE. It's not random.
Somewhat random is whether the bookmark disappears or is overwritten by the name of another file in the window.
The function of the bookmark is preserved and when you click in the incorrectly displayed area, the correct file is switched and the bookmark names are corrected at that point.
Another swipe of the cursor (without clicking) will mess up the names again.
I have also attached the exported Preferences.
Thank you for your support.
Jaroslav