### Environment - TeXstudio: 4.0.1 - Qt: Version 6.2.0, compiled with Qt 6.2.0 R - OS: macOS Big Sur 11.6 - TeX distribution: texlive ### Expected behavior The text cursor on the editor is normally displayed as a blinking vertical line between two characters. ### Actual behavior This one happens instead: https://user-images.githubusercontent.com/92455185/137169631-3df7a33b-70f1-411c-a88f-cdf99dd4777d.mov ### How to reproduce Click on any part of the editor.