Hello,
The problem is back after the recent Windows update.
The problem is not just limited to "save" or "save as" dialogs. Any daughter window of any application is affected.
This time the problem doesn't go away even after purging.
I think the bug need to be fixed at fundamental level to avoid these issues after every Windows update.
With this problem, many apps are rendered useless (as you can't save or open). As such I've uninstalled the program and waiting for a bug fix to reinstall it.
I have six licenses of WindowBlinds.