Queued Building Disappeared...
Ok, so I discovered this bug today (I think it is a new bug). Basically, if you queue 3 buildings (I did this with wheat fields), the 3rd building in the queue only shows up for a moment, and then disappears.
Whenever it disappears from the queue there is a slight flash of the screen like something is being loaded. The current building is still being constructed, but the 3rd item gets removed somehow.
I kept trying to put 3 fields in queue but each time I tried the 3rd one was removed within 10 seconds of placing it.
And no, there were no buildings being completed at the moment the 3rd building was removed from the queue. The one that was being constructed was still not finished. ;)