I'm having the same issue Cosmin Popovici pointed out in this thread https://litmus.com/community/discussions/6950-full-width-on-gmail-app-for-ios where Gmail on iOs, particularly the iPhone 6, is pushing content to the right and cutting it a bit like so:

gmail right push

But the solution they're proposing of targetting the main wrapper table, isn't working for me. Anyone have any other suggestions?