[Plugin: Qtranslate Slug] Post is missing bug

I got an annoying bug:
I set the post slug for Hungarian and English.
Checking the post: just got a 404 error. Like the post is never exist.

But after that I change the slugs the page will appear.

It is like something is wrong with the slug but I don’t know why.
I swiched off all the plugins so it seems the problem with the Qtranslate slug plugin.

https://www.ads-software.com/extend/plugins/qtranslate-slug/