That shouldn’t matter for compatibility, and very likely not for this bug either.
I was using a Lenovo Thinkpad KU-1255.
My current phone (Xperia 10 II) seems not affected, and my current keyboard (Keychron K3) has optional Bluetooth, so haven’t checked if this problem still persists.
So currently, you are using a Keychron K3 with your Xperia 10 II ? …and it functions nicely?, interesting…i’d like to be able to do that, albeit the K3 seems expensive.