Pinging @JCPalmer
Looks like an issue with matrix weights. Picture is not near enough to go on. Provide export log file.
Also, try another export with the armature deleted to verify issue.
Pinging @JCPalmer
Looks like an issue with matrix weights. Picture is not near enough to go on. Provide export log file.
Also, try another export with the armature deleted to verify issue.