Right after the server came up with the new time zone feature, I noticed a new problem.
One of my opponents is on holiday and has the 'on vacation icon' activated. Now there are two of these icons (on the 'my games' page) instead of just one. I didn't have this problem until after the server came back up.
I also noted the 'on vacation' icon now appears in the player tables, but in that case there is only one icon.
The time zone feature looks good!