probably a bug in the video driver (Intel ARC) rather than a B4X one, but just to check if someone is experiencing the same issue:
when I paste a long text in a smart string ($"..."$) in the IDE, Windows freeze for a while, the bottom taskbar vanishes, the IDE window maximizes and then back again with the taskbar.
it's the same behaviour you get when you force a video driver reset: (press Windows Key + Ctrl + Shift + B simultaneously)