Not a massive bug, but it appears that in the expanded standings that the Pre AS/Post AS isn't working properly, Pre AS isn't stopping till after the All-Star game.
Day of AS Game:
http://i.imgur.com/a4JpJjD.jpg
9 days after AS Game:
http://i.imgur.com/ou3TW7k.jpg
Angels Schedule:
http://i.imgur.com/B0FHGZs.jpg
Just using the Angels as an example but all teams have played 8 games since the AS game, however their post AS record is shown as 1-4 instead of 3-5.
EDIT: I believe I've found the problem after doing some testing with a new save in 2015, it appears the standings are only ticking over to the Post AS record on July 22nd, so I guess the standings are assuming that the AS game is around July 20 instead of July 14.
EDIT2: Only workaround I'm seeing right now is to delete the major_league_ml_c_2015 in the schedules folder (not sure if this is safe or not?) and then generating a fictional schedule so then the schedule can actually put the AS game on a day of your choosing. As if you base your save off a real life schedule it appears even if I change the day I want the AS game held, when you regenerate a fictional schedule based on this it gets swapped back to July 14 and if you keep using major_league_ml_c_2015 and manually set AS game to be held on July 20 or something the schedule doesn't update that and you end up with MLB games on at same time as ASG.
EDIT3: Just tested it with the above settings and managed to get AS game scheduled on July 21, games started again on July 24 and forward to end of July 26, all teams have played 3 games since the AS Game and it's being correctly recorded in the Post AS column that they've got a record based on those 3 games since the AS game on the expanded standings.
EDIT4: Just tested with the 'automatically schedule AS game' ticked and after deleting the major_league_ml_c_2015 out of schedules folder on my PC, it's generated a new MLB schedule which has automatically put the AS game on July 21st .
So I'm pretty confident in saying that the Pre/Post AS on expanded standings isn't changing over till July 20/21 for some reason (don't know if that's intended or not) and doesn't tick over earlier even if you have a ASG scheduled before that date (like if you're using the real life MLB etc schedules). But it seems if you don't use the major_league_ml_c_2015 etc schedules then it will schedule the ASG to the date that it ticks over on the expanded standings.
*All from a MLB standpoint of course.