Moving clip relative to muted areas - what am I doing wrong?

I'm having a problem moving the recording / or muted spots at about 0:00.135. evenly throughout the recording.

Maybe I'll give an example then you'll know better what's going on 🙂

There is a fixed element, such as an intro. It repeats in each episode. On the track with the voice clip, there are muted spots (loud breaths, mumbles, etc.). I started to notice that these muted parts are shifted from what I marked (a few days / week / month before).

It looks as if the mutes are locked, but the clip with the sound has moved. That's why I suspect so, because it affects the whole track and dozens of places. Always by the same amount shifted.

Maybe there is some function that I activate accidentally and unconsciously move it?
Maybe some Audition update introduced something that such an offset occurred?
The effect is cut off word ends.

Has anyone encountered such a situation? How can this be remedied?
The situation has occurred several times before, but I suspected the carelessness of one of the people, until I had this myself.

Example:
Mute in a good place (episode from a few months ago):

All mutes moved (same clip, but current episode):

It could be relevant:
My workflow is usually:

1 - open the last segment of a multitrack session (sesx)
2 - removing unnecessary clips and leaving fixed clips
3 - adding new clips with the current recordings and saving to a new sesx file

We work in two people, with a shared drive (Synology Drive), but never simultaneously. Simply one person does one task, when he finishes and closes the sesx it is continued by the other person.
Both people on MBP M1Max, macOS 12.6.3.