Thank you so much, this is the patch I've been waiting for since I upgraded to MM and had to realize that adoptable storage didn't work with my SM-T805.
I split my SD-Card via adb and one of those tutorials existing for S7/S7 Edge, I used this one: http://www.modaco.com/news/android/heres-how-to-configure-adoptable-storage-on-your-s7-s7-edge-r1632/
Everything went fine and I had 16 GB more free space. The bug that the amount of total space is not shown correctly doesn't bother me, what counts is the new free space that is displayed correct.
16 GB is a joke for the Tab S.
Before I used Link2SD pro, which was ok, but the app didn't work anymore in the correct way in MM.
Here's the result:
Edit: I can't see the picure in the post, so here's a link to the picture: xdaforums.com/picture.php?albumid=13609&pictureid=54177
I couldnt split my sd card with this commands idk why. When i ran the command "adb shell sm partition disk:....... mixed 80" it just goes the next line in cmd. anyone knows?