Using InDesign 16.0.2, opened a local .indd file, made an iterative change and selected 'Save As' to create a derivative file. Nothing happened, no save dialog box at all. I quit InDesign and relaunched, and that seemed to clear the problem. This has happened at least once before in the last month. Though that might have been in the previous build before the most recent InDesign update (18days ago). The app wasn't frozen or inactive in other ways, it just wouldn't let me 'Save as' until I relaunched the app. So no crash report to send on. I use the app daily and this hasn't been a repetitive error, but very odd behaviour none the less.