This is been plaguing us for months. At first I thought it must be a problem with the flash memory on the router that was doing the User Manager service so we went to the trouble of moving the User Manager to different hardware and to my surprise the problem still exists. So it has to be some type of bug in the RouterOS or it may have to do with the Router OS having this problem only on certain types of hardware.
Has anyone seen this problem before and do you know if there is a fix for it?
Next thing I was going to try was utilizing a hard drive for storage on an i386-based router instead of flash memory. It seems as though the writes are almost constant.
In User Manager the profile is still listed for the user but the log shows there is no current profile, the user list shows the same and from a terminal there is no profile.
When you add another profile to the user it pops up as active with the phantom profile also being active.
The ROS version is 5.22. Not seeing the same issue with an earlier ROS version 5.14
What version are you running and are the symptoms the same?