Problem with bluetooth keyboard: not usable in MATE

[tofono]

I have a bluetooth keyboard that I use regularly with other devices. The keyboard is Jelly Comb Case with Italian Keyboard for Samsung Galaxy Tab S6 Lite 10.4 ", Removable Backlit Keyboard in 7 Colors, Italian QWERTY for Sam If I try to use it with Ubuntu it only works with the LIVE version. When I install Ubuntu it stops working, after updates.
I have tried with various Ubuntu Mate and also the impish version of Ubuntu Mate but, using the same notebook, the computer cannot use it (LIVE yes, installed no).

[tofono (tofono)]

I also tried with Ubuntu 20.04.03 but only with the live. The result is that the peripherals work without problems. I have not had the opportunity to test with the operating system installed on a mass storage.
The BT device on my notebook is:
lsusb
....
Bus 001 Device 006: ID 13d3: 3362 IMC Networks Atheros AR3012 Bluetooth 4.0 Adapter.
...

[tofono (tofono)]

I have installed UBUNTU 20.04.3 on an HD. The device is functioning correctly, with all updates installed.

[tofono (tofono)]

I have installed Impish Ubuntu and the problem does not occur. Obviously it's about the MATE version, I hope you can solve it. Thanks.

[Po-Hsu Lin (cypressyew)]

Marking the linux package as fix-released as per comment #3, add the mate project as requested.

[tofono (tofono)]

I downloaded the Impish Mate version of 09-25-2021 and I made a fresh installation. I also proceeded to update (it only updated Firefox because I believe all other updates were included).
Unfortunately the indicated problem has not been solved. I also tried with the updated Ubuntu Mate 20.04 LTS but it still doesn't work. I also used another Bluetooth adapter on another PC but the result is the same. Hello.

[Daniel van Vugt (vanvugt)]

If it works in Ubuntu 20.04.3 as you say, and only fails in MATE, then we probably shouldn't assign this to the common package where it's working already.