Can't cancel auto correct suggestions in Gmail

When I use the gmail web app and iOS suggests a spelling (ie I type w-e-d and it suggests we'd), I can't seem to tap the cancel "x". I try and try but it won't disappear. I've tried different parts of the screen so don't think it's a hardware issue. I can do it right now in this post, and in the Notes app, just not Gmail for some reason. Anyone else?