Randomly getting opt-out / opt-in in a CallQueue

Dear All,

Once again one of my customers is experiencing something no other words can describe but: magical.

Set-up:

• CallQueue "CQ1"
• Call answering: "Team1" (with 8 people in it)
• Conference mode: on
• Routing: attendant and not precence-based
• Users can opt out of taking calls

2 out of the 8 persons in Team1 is experiencing that they are randomly getting opt-out or opt-in during the day.

Already deleted the cache, re-installed teams (newest versions) but this unwanted magical thingy is still occurring multiple times a day.

Anyone else having or had this symptoms? Can't figure out what to do next.

Thanks for you thoughts and time!

Benjamin