I know a lot of everything around Google Plus is beta. This game included. I couldnt find any area on the forums to report a bug.
Things I have found:
Any/Every Timed mission changes. And you cant have two timed missions at different times. The newest will change its count down to the oldest.
Here is what has been happening:
Receive First quest to kill 50 zombies in 12 hours.
Kill a few zombies, fix a few fences.
Exit game to the Plus Games area. (total of 5 minutes)
Log into another game for a total of 2 minutes.
Log back into Zombieland and instead of having only 7-8 minutes off I am down to 5 hours.
I plant some fruit. Kill some zombies.
I get another quest thats timed.
It says wait 10 hours for so and so.
I look at the quest and before my eyes it jumps down to the time that I have left on my first timed mission (the one to kill 50 undead).
I would of just thought that it was a fluke. I failed one of the kill 50 zombie missions because every hour when I would come in and play I would loose an extra hour off the clock. I tested this on 2 Google Plus accounts and had someone run through with the same scenario (its hard to miss it just starting the game). And they ran into the same Time Vortex issue.
Another issue or just a complaint, Useful drops are very rare. And early missions that require the crafted items (the kill super awesome zombie police guys for one) and a lot of them are very very common. The loot table needs to be a bit more user friendly.
Thank you. I know the first one has to be a bug and all.