screen redraw errors: content disappears while editing
While editing content (most usually, editing type), all the type disappears from the screen, so you can't see what's being edited. Scrolling up or down until the affected area is off screen, then scrolling back down fixes the problem, but it's a huge time suck to have to deal with this and all the other bugs.
Filip Blazek commented
I confirm this VERY ANNOYING BUG is still present in InDesign 15.0.3. Adobe, please correct bugs.