It's a working theory based on observation. One user confirmed that their ally has seen a claim with -230k which was still protected and on the next day they were able to contest. But I was never able to confirm it myself because people around me reset timers sooner than that. In the screenshot below you can see timer -138k and the claim is still under protection. The 3 day protection works, it's finally been fixed in v9.31. The timer also does not reset all the time, probably to prevent servers