Map preview does not show

[EntropyWins]

The map preview of Final Rush Pro 5.7 does not show in the classic FAF client. It does show in Downlords Client. For some versions of the map it works, like versions 5.2 and 5.5, but then for others it does not. Even though nothing changed in the map with regards to the preview.

I'd be very grateful if someone could figure out what the issue is and how to fix it. And Shamble will love you forever I am sure

Also wondering why the lobbies do not use preview.png, final_rush_pro_5.7.large.png or final_rush_pro_5.7.small.png instead of a generic view of the map.

[EntropyWins]

No ideas?