[reggoboy]

Just mentioning that I'm facing this similar issue again. In this case, I copied an annotation from Page 1 and did a Paste to Origination Location onto Page 2. But when I pasted to Page 2, I couldn't see it, until I exited Annotation mode and saw that it was all the way at the bottom. But the bottom strip is cropped when in Annotation mode. 

And since I'm on macOS, I don't have access to the two finger touch. But I wanted to share the solution, which relies on iOS emulation in macOS:

Code:

MobileSheets > Settings > Touch Alternatives > On

Then press and hold Option to effectively get a touch screen using trackpad. 

I may have shared this before; but if not, hope this helps!