Wrong aspect ratio in some video players

[smoer]

Just ripped a disc, and PotPlayer/MPC-HC plays it in kind of a 1:1 aspect ratio, it looks square. VLC plays it fine.

I don't know what to troubleshoot, so here's mediainfo: https://hastebin.com/raw/javunefaxu

[VarHD]

According to the MediaInfo, the size of the video is exactly 1920x1080 so it doesn't look like there's anything wrong with the file itself. I would just ditch this other player if I were you and keep using VLC. Alternatively, get Plex and use their player - it also seems to be able to play anything you throw at it.

[danber]

I Have the same problem. First and only time. 16:9 goes to 1:1. Resolution still 1920x1080. WMP and MPC plays it square.
MKV 1.71.1. Original 1080I, could this be the cause? Maybe someone found a solution?