Cal. 321 adjust time issue

Hi guys,

I have a 105.012-65 with the 321 movement. Have been wearing it for a few years and just the other day, when I went to adjust the time, the watch kept ticking when I pulled the crown out (it also felt "stiff" to pull out).

I adjusted the watch before noticing it was still ticking (probably not great), but any idea what might cause that? Maybe the setting jumper is snapped?

I'm not confident enough to take the back off myself, and I live in a place where there are probably no legit watchmakers that can handle a 55 year old 321...

Thoughts welcome!
Cheers

Are you saying that your watch used to stop before when you set the time?

There are no hack on a cal. 321, it will run while setting time