Have you figured out any way to disable it? I just want it gone or compacted. I think it is very silly that the keyboard is almost an entire row of keys taller than it needs to be, because there apparently has to be a whole row dedicated to the emoji button and suggestions I won't use, and then another whole row that's just the settings button in one corner and the close button in the other. One would think that an on-screen keyboard application would at least try to take up as little of the available screen space as possible. I don't actually mind these features, but they could really stand to take up about half as much space.
Anyways, there is a separate keyboard application that likely came bundled with Windows, called On-Screen Keyboard (the default one in Windows 10 and 11, which you and I are using, is the Touch Keyboard). You can try and configure this application instead, and maybe have more success in limiting users from putting it in handwriting mode and stuff.