T1 transport carrying 3 T1 engies refused to pick up 1 more T1 engi

UEF

https://replay.faforever.com/21319204

22:10. Top pond. Tried 3 times, gave me "Transport is full"

https://forums.faforever.com/viewtopic.php?f=2&t=17511
just gonna post this link cause it is a good read. Tho even considering transport weirdness described there it still does not explain what is described in the post.

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