I think because these buttons act as keyboard keys, they are disabled in tablet mode, which is not desired behaviour. I found this libinput issue which appears to be the same issue (albeit with a different device): https://bugs.freedesktop.org/show_bug.cgi?id=103749
Similarly, the touchpad stays enabled in tablet mode.
Both of these probably need changes in libinput. I might have a look at doing this as some point, but don't count on it.
I think because these buttons act as keyboard keys, they are disabled in tablet mode, which is not desired behaviour. I found this libinput issue which appears to be the same issue (albeit with a different device): https://bugs.freedesktop.org/show_bug.cgi?id=103749
Similarly, the touchpad stays enabled in tablet mode.
Both of these probably need changes in libinput. I might have a look at doing this as some point, but don't count on it.