Playback menu screen position

Hi All,
Hope you can help me. I’ve just set up an Odroid C2 with LibreELEC and Kodi 17.1. I needed to shrink the screen size to fit my TV. There are no issues with Kodi menus or playback – everything is sized properly.However, the text that comes up when I press the menu button during playback looks like it’s still using the original positions. I can only see the bottom half of the top text and the top half of the bottom.

Is there a separate setting for this?