Checked on two iPads running iOS 9. When in landscape mode on www.cruzio.com, the twitter widget goes into a resizing loop.
I made a little video where it looks like two classes get toggled back and forth in quick succession: env-narrow and env-wide. Oddly, if I display a single tweet (instead of my default of 4), the issue does not happen.
Here’s a short video demonstrating the issue: https://www.youtube.com/watch?v=IitetxLgTUE. I can’t reproduce it on other browsers/devices, including a Nexus tablet running Android.