PDF Embed Annotations appear on iPad but not android in full window mode.

I'm using embedMode = 'FULL_WINDOW', however the annotation tools don't show up on a few different Android tablet devices that I have access to (Lenovo P11 and Amazon Fire tablets), but they do show up on an iPad Pro.

May ask if it is using a whitelist of devices and can we add a device to it if so?

Or alternatively is there a workaround to have full capability on Android devices>