3D Frame Packed output

I have Kodi 18.6 with Kernel 4.9 running on my Vero4K and most of my 3D ISOs work fine.
But none of my 3D MVC MKVs (remuxed by makemkv) are working fine. They are correctly identified as 3D (I get the ‘Select playback mode’ screen) but if I chose ‘Same as movie’ it only shows me half of the screen for the left eye and the other half on the right eye (either only using the bottom half of the screen or the whole screen but somehow split in the middle of the screen).
I have .3D. in the file name, but even adding .MVC. doesn’t do the trick either…