InDesign 2023 v18.00
.idlk files are not recognized when working from a shared Dropbox folder. This issue appears to be very extensive and well documented. While I understand the many different use cases (synced/not synced, not connected to the internet, etc..) It would just make sense for InDesign to check for .idlk files within Dropbox directories and let Dropbox/Users figure out the potenetial for syncing errors and find a solution when those issues arise.

This causes very frustrating issues for collaborative teams.