Latte dock "unhides" on second display if both displays are being used fullscreen

Hi @anon25081990, the desired behavior you are describing--the dock is automatically hidden when an app on the display is set to fullscreen--is the default behavior. Double-check in Behavior -> Advanced Settings -> Can be above fullscreen windows (it should be disabled). If it is not working, an issue should be raised with the developers (the GitHub page says you should do that here: Log in to KDE Bugtracking System).

I am not sure how responsive the dev team is to issues on this application. The GitHub page makes it seem like it has just been absorbed into KDE's other numerous works.

A workaround has been noted here, involving setting a window rule for the fullscreen app to "keep above all": How to get rid of the plasma panel and latte appearing when playing on GeForce Now? - r/kde

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