Hi, Lauris. I don't think that this topic has been discussed previously on this forum but it did come up in beta testing a few years ago. Some people experienced it while travelling, others when daylight savings time started or ended, and one unfortunate fellow was away from home when DST ended so some tasks were -1 hour while others were +3.
The issue was not resolved at that time. Some fixes were put into cloud sync that made it better, but not totally fixed and the discussion sort of faded away. Here are a few things I can tell you:
1. You are not alone or crazy, this is an actual unresolved problem.
2. MLO does not seem to really have due dates or start dates that don't have a time. When you turn off "use time" it apparently assigns the time to be midnight.
3. When you see "use time" clicking on by itself and dates changing what is probably happening is that your original date is being moved back (or forward) one hour so midnight this morning becomes 11pm yesterday
4. There was some speculation (never verified) that this problem affected only tasks that had been synched to MLO cloud while in the other time zone. This means that you can expect some tasks to move to 1am when you get home, but they will not necessarily be the same ones that went to 11pm while you were away.
5. A possible way to limit exposure might be to turn off cloud sync before leaving home and turn it back on when arriving home. If anyone tries this please come back and tell us if it works
6. This would appear to be a bug. Thank you for discussing it with the users on this forum, it gives us the opportunity to explore workarounds, but please also report it to MLO Support so it can get fixed.
-Dwight