Vivomove Style - strange behaviour of water meter.

Hello,

From some time I bother with problem of strange behaviour of water meter. When I try to add/change value I have drunk then the Garmin watch changes it randomly (as shown on attached video I recorded).
I restarted watch to factory settings many times and it doesn't help.
Currently I'm on firmware 4.00.
On previous firmware versions I didn't notice such problem.
What can be a cause of problem ?
Screen issue ?

P.S. And still problem with with automatic waking up of screen persists ( when eg. waving/shaking hand) Expressionless

Is it any possibility to downgrade firmware to 3.8 or 3.9 ?

Any firmware update is expected or this watch is no longer developed/supported ?

Click here to play this video

Click here to play this video