Occasionally when I cycle through all my toons parked at a JP, they register as having competed the JP even though they have not for that day.
Steps to reproduce the problem:
1. Log into a toon at a JP chest
2. Chest will appear unopened
3. Open the chest
4. Immediately press F12 and pick another toon parked at the same JP
5. Chest will show as already opened (bug).
Once this happens, logging out or restarting the client does not fix it. The toon in step 5 is flagged as having opened the chest for the remainder of the day.
Part of me thinks that someone in ANet was thinking “hey, wanna see something funny? Watch this…”