[Zubersoft]

This is actually based upon the resolution/screen density. Oddly enough, your tablet is reporting that it only has a "large" screen density, which puts it in the same group as 7" tablets. Due to this, it's using a layout where the cancel, next and previous buttons are not visible. The next and previous buttons are under the menu at the top left because they don't fit on a 7" screen. The cancel button isn't necessary because you can just hit the hardware back button on the tablet itself to exit the annotations editor.

Here's what I will do - I will change the Save button to a save icon to reduce the amount of space used and add the previous/next arrows back at the top. I will also ensure that the top section can scroll horizontally (I believe it's already set up to do this) to handle smaller tablets. I don't think the cancel button is really necessary though. I could add a cancel icon to go with the save icon if it really does add value. Let me know what you think.

Thanks,
Mike