Errors in display of personal artist rankings

there is this particular artist that i listen to, and i’ve listened for 97 minutes. she’s ranked 25, no issues here. the issue is that somehow she is displayed before the other artists that i’ve listened more to ? so just imagine,

20th place at 100 minutes.

21st place at 99 minutes.

all of a suddenly 25th place at 97 minutes ?

then it’s back to 22nd place with 99 minutes.

please fix this.