New, random bug appeared, and it appears to be a platform bug as it shows up in IntelliJ and other tools. For unknown reasons I'm unable to type characters into the editing windows. Menus, buttons and navigation works, but typing produces nothing. No workaround at the moment except exiting and restarting.
This is new behavior that came soon after installing 17.3.2 from 17.3.1
Here's a bug, reporting here if there's a known workaround or if anybody else sees it