Annoying problem with kepub, TOC and Kobo Aura

Hi guys!

I'll explain my problem.

When i convert a book for my Kobo Aura 2nd edition (using the kepub plugin) i usually put <h2></h2> tags for every chapter and create a TOC as i want it to be. My Kobo is able to see the TOC but when a chapter ends and it should go to the next, actually it goes to the previous.

The chapters are in the correct order, by the way.

For a better explanation what i do when i convert is basically putting, like i said earlier, h2 tags in the html file, then, before converting to epub, i just select the tag h2 using the magic wand icon in "structure detection" -> "detect chapters at" because h2 tags are not used elsewhere.

This problem happens with all my kepubs. I don't know if it's Calibre's fault or my Kobo's.

I hope you can help me and sorry for my english :D