Bangle.js 2 stuck in bootloop

Hi there, thanks for your reply.

So you see the 4th image with Bangle logo and then it restarts itself
to first image

Yes, this is correct.

Does the progress bar in second image goes like this till the end even
if you don't push/hold the button at all?

Yes, this is also correct.

I also thought the button could be stuck, but it doesn't "feel" stuck and can be pressed normally without it feeling off in contrast to earlier, when the Bangle 2 still worked normally.

So are you thinking the button might be "soft stuck", so that the board thinks that it's stuck when it actually isn't? And if so, what could I do about that?