If you discard the received "Glass enchantment" in the quest "How enchanting" it is not possible to complete it. It is also not possible to reject and re-take this task. So you're stuck with taking the Icepire Peak zone rewards forever. This bug has existed for years, you fixed it, and now with the new mod it's back. . . Interestingly, various (I won't hesitate to say), HAMSTER is impossible to discard by accident, because you have to type in the "discard" box. But so important to the path of quests the thing, was not secured at all.
Please fix it!
Better to feed the troll than listen to the idiot .