Buy all lessons bug when you publish your own article

Jak vyvolat chybu: When you own all of the lessons and you publish another PRO lesson, button "Koupit PRO verzi kurzu" is available.

Chybné chování: It shouldn't be available, because you own the PRO lesson and you don't have to buy it. Even if you can access the article, you can buy it and spend your points.

Předpokládané chování: Remove button "Koupit PRO verzi kurzu" when you own one of the PRO article.