Hitched animals dissapearing

[Hasleak]

Hello,
I have an issue with taming animals which i can't explain. Around 12 hours ago i fed clover to 3 untamed animals (1 boar and 2 aurochsen). Went home with each one and leashed to hitching post. Played a bit and came back to check them around 4 hours later and all animals were there. Waited around 8 hours more and when I came back i saw only 1 aurochs. One aurochs and 1 boar dissapeard. I didn't saw them in aggresive or didn't saw any dead bodies. Am I doing something wrong with taming thoose animals?

[borka]

http://ringofbrodgar.com/wiki/Taming

The process begins by feeding the animal a Clover, leashing them with a rope and then hitching the animal to a Hitching Post

Afterwards a yellow number will appear on the animal. This is the overall taming progress and it increases in increments. Starting at 15 and completed at 100.

After a random period of time (between 12-26 hours, needs testing) the animal will enter into a combat stance. This means it is ready to be progressed

The animal cannot remain in this state for too long 5 hours or it will despawn.

[Hasleak]

http://ringofbrodgar.com/wiki/Taming

The process begins by feeding the animal a Clover, leashing them with a rope and then hitching the animal to a Hitching Post

Afterwards a yellow number will appear on the animal. This is the overall taming progress and it increases in increments. Starting at 15 and completed at 100.

After a random period of time (between 12-26 hours, needs testing) the animal will enter into a combat stance. This means it is ready to be progressed

The animal cannot remain in this state for too long 5 hours or it will despawn.

I know about it but I fed clover yesterday around 5-6pm, checked on them around 11pm so there was 6h break. Next time I checked at 6am so another 7h break.
Right now we have 13h from start. Even if there was aggro stance right after 12th hour of waiting, I should see at least one animal in that stance because window would be in 12-17h (5h in aggro stance) after feeding clover. Am I missing something there?