v. 4.4.4 for minecraft 1.7.10
When you select any Set, and then press open button in the right-bottom corner, sometimes it may happen the bug. The problem is when the quest icon is under the open button - in this case it not just open the set, but also open the quest ander the button. But it shouldn't.
Example:

1. https://pp.userapi.com/c845122/v845122830/2008f0/3J_wxGa6lR8.jpg
2. https://pp.userapi.com/c845122/v845122830/2008e6/DeX18jmivss.jpg
   In this case the "Aluminium ingot" quest is under the open button, and it automatically opens when i press open button.

Unfortunately, 1.7.10 is no longer supported. This is fixed in the most recent version for 1.12.2.