Party finder "remove role selection for all remaining members" option not saving

It happens frequently. I create a PF for S ranks, making sure to check the "remove role selection for all remaining members" box. People join.

Then in the next hours people leave, I disband, I join another PF, but, without failure, when I try to open my PF again later on (either the first time or later), it has random jobs assigned to it - presumably from former party members. It keeps all the other settings, but not this one. Why? I checked that box when I made the PF before - why do I have to check it again?

It might be because people left the PF while it was open. I don't know. But it's very annoying.