Animations made in blender change when imported to roblox studio

I made animations for a viewmodel and would like to import them into roblox studio properly.

The animations seem okay at first but if you look closer they are different than in blender.
some parts are placed differently or rotate in a wierd way or not at all, theese little things add up
and make the animation look much worse often unusable.
Here is a not so drastic but still very annoying example.

This has happened to me many times in different projects and i eventually just gave up every time.

I have searched the internet looking for solutions or at least people with the same issue, but could not find anything usefull.

I used the “Rig edit Lite” and “Blender Animations Plugin” to make and export the rig.