Issues with quick apply
Quick apply is very slow the first time that you've opened it after a while. In addition, if you switch to another document that you haven't viewed in a while and you click quick apply, InDesign crashes.
usa4cc shared this idea
As confirmed by the user, The issue is resolved.
CC 2018 crashes when I try to to access quick apply
It seems to happen when the quick apply button is pressed immediately (3 - 5 sec.) after switching to a document tab that hasn't been selected in a while.