Corrections "overlay" on primary screen

Hi,
I’m experiencing an issue on MacOS (Sequoia) that when I use Slack on a secondary display the suggestions (orange or red underline) is displayed on the primary screen.

Any suggestions how to fix that?

It sounds like a display positioning issue. Try adjusting your primary and secondary display settings in System Preferences > Displays. Also, check if updating Slack and LanguageTool helps. If the issue persists, restarting both apps or your Mac might resolve it.