Same issue here. Cannot save or export in InDesign. Updated to Monterey and immediately started having issues. Using the most current version on InDesign no updates available in the cloud. Rebooted computer, reinstalled InDesign, unplugged external display - no luck saving or exporting. I am able to click the save and export buttons but no dialogue box appears to actually save or export. Hoping this issue gets fixed quickly!

Mac OS Monterey 12.0.1, Indesign 17.0
Nothing happens when clicking export or mount.
Tried reinstall but no change. Using a Thunderbolt Display and MacBook Pro.
It works if I disconnect display.

Since updating to version 2022 I can no longer save the document, save as or export.

Same saving/exporting issue. Just upgraded today to macOS Monterey, and InDesign v17. No Export or Save/Save As dialogues. Tried reinstalling, rolling back to previous INDD versions, etc. Found the thread about external monitors. Unplugged one of my two monitor dongles, leaving one external still plugged in. Dialogue boxes are back up and running. Not great, hoping for an update!

The software do not respond when clicking on Export or Save/Save as.
When closing the software it asks if I want to save it, but even there, it does not do anything when I click on 'save'.
Same issues with Other Adobe products (after updating to 2022 version + MacOS Monterey).

Same issue here. MacBook Pro (16-inch, 2019). Monterey 12.0.1 (21A559). InDesign 17.0.
Here are my Creative Cloud specs (Italian version):
App 5.6.0.788
File 5.6.0.788
Esplora 5.6.0.788
Plug-in 5.6.0.711
Librerie 1.0.3.14
Installazione di Creative Cloud 5.6.0.788
Core Sync 4.21.1.1
Processo CCX 4.6.3.1
Libreria CC 3.14.18.1

The issue happens using an external monitor.
If I unplug it and restart InDesign everything works fine.
If I unplug the monitor without quitting InDesign the popup windows appears partially and I have to kill InDesign via Force Quit. See attached screenshot.

I made my laptop the primary display and it seemed to fix the issue temporarily FYI

I am experiencing the same problem. Using MacBook Pro 12.0.1 Monterey. I use Suitcase Fusion. InDesign 17.0

Re-connecting the external monitor is not making save dialogs appear.

Re-connecting the monitor is not working for me.

Same issue here with Indesign v17 and macOS Monterey on a MacBookPro 16 inch
Using a USB-C to hdmi adapter to an external monitor
Save and Export dialogues return after disconnecting external monitor.

Same issue here with Indesign v17 and macOS Monterey on a MacBookPro 14,3
Using a USB-C to hdmi adapter to drive an external monitor
Save and Export dialogues return after disconnecting external monitor.

Seems to be an issue with external monitors. If I start up InDesign with an external monitor the dialogs don't work. If I then unplug and plug back in again they work. USB-C to Thunderbolt 2 adaptor to Apple Thunderbolt display.

Thank you for posting this bug. I am experiencing the same problem!