RStudio Starts, but I can't see any windows

This is definitely a duplicate bc I've seen multiple questions about it, but for some reason I am "not authorized" to view those threads, so I'm starting a new one here.

What happens is I open RStudio and everything behaves as if RStudio has opened (my mac menu changes, the RStudio icon has a dot under it, etc), but I can't see RStudio at all. I right-click on RStudio in the task bar and hit "Show All Windows" and my screen just tells me "No Available Windows." Can anybody shed some light on how to troubleshoot this (without reinstall RStudio)?

I'm on Mac OS Mojave running R 3.6.1 and RStudio 1.2.1335.