[Q] Screen doesn't stay on anymore topic

When I bought the watch back in November, the screen would stay ON all the time. I know it to be a fact because I used to leave it on a desk without ever touching it (for hours) and it would always display the time (it was like having a desk clock, for when I would rather not wear it to have more comfortable wrists while writing or that sort of things).

Also in the train (I used to travel a lot in that period) I would leave the watch hung on the wall while sleeping (at night) and it would not turn itself off, so I could check the time in case I woke up in the middle of the night, without neededing to reach for the watch.

Recently (it was January) I noticed that it does not work like that anymore. After a very short time, the watch screen goes off. It is still in standby: it goes back on if I touch it or press the button.....but I want it to stay on 'without limits' (in dimmed mode). It was like that before.

Somehow this is the behaviour of the 'keep screen always ON' setting.....but in fact, that setting is already set to 'ON'.

So is there some kind of firmware update that changed this behaviour? I would like the clock to not go off when it is not on my wrist, sometimes I just need to keep track of time AND have my wrists free....and it is not possible anymore.