I've had this same issue with 2014 Q2 and 2015 Q2 SP1 releases.
On the attached image you will see the height goes crazy tall. I can't replicate this myself, but have had several users report it. The only thing they have in common is IE 10 and 11, which i have tried myself and cannot replicate. They are reporting that it is occurring not consistently (once a day maybe).
I know this isn't a lot of info to go off but am hoping someone may have seen something similar or could give advice of things to try.
Thanks in Advance,