Password change is normal but it will turn to be a potential issue if one user is inactive for months (more than 6) or years, then woke-up, reactive and instantly changes password.

If I come back to the forum after months, I don't see why do I  have to change my password, if I don't lose it. I guess most of you do it too. The most common reason of password change is forget password from initial account owners or hacked/ stolen accounts.

Combinations of two or three things aforementioned are issues.