After updating R to version 4.4.0 and re-installing packages, I now see a "blank" console window after starting RStudio, or when switching to a project. This doesn't seem to happen every time, but most of the time.
Hitting "Enter" in the console shows the prompt, but there's no startup-message from R, so I can't see if/which R session is started. Mostly, after closing a project, the new session is startet properly.
