I have added some logging pertaining to user-generated events.
Please download and install this build:
https://www.camerabits.com/download/PMPlusSetupR5744_8fbfa8af.msiLaunch it and go to the Help menu and choose "Edit Debug Settings..." and in the "New debug setting:" field paste the following:
USER_EVENTS_LOGGING
and click the "Add" button. Then click the Close button and quit and relaunch Photo Mechanic Plus.
Then try and get the Organizer tab to hang. Make note of the time when it happens. Then go to the Help menu and choose "Reveal Support Data..." and moments later a Windows Explorer window will come forward with the zipped log file selected. Use the 'Attachments and other options' link when you're composing your reply to this message and there you'll be able to upload your zipped PM log file.
Please include in your reply the time of day that you noted.
Thanks,
-Kirk