Regen man, Chaos door, Drop table

Bugs and more bugs. This game is really getting on my nerves.

Mana Regen: I know the mana regen bug has been covered before. I had to find a Reddit post that says that when you select the incantation increase options in the skill tree, you end up with a completely bugged mana regen that makes the character almost unusable. So there is a mana consumption problem as soon as you reach a certain incantation rate.

Chaos Temple: I have done this several times without any problem. Did I just die? So I find myself in front of the offering and I select close (the door), it did not close it but the offering option is now "open". I can no longer access the trial: application error. The door is open with a previous instance not accessible and it does not want to open another one since the door is already open.

Drop table: There are items that have literally disappeared from the drop table. How do I know this, I no longer loot scrolls of wisdom (which allow you to identify items). I had read on a forum that it was "enough" to launch another game and then come back (if I had been asked to do the rain dance, it would have made just as much sense to me), the worst thing is that it worked once (before the previous patch) now it doesn't work anymore. It must have been 50 hours of play since I last looted this item. And the question is what else has disappeared?

Sorry if my English is not perfect, i play in french.

Small clarification regarding the chaos door. The state of the door has returned to its correct position by itself (i.e. closed). I suppose that your servers delete closed instances after a while and that in the absence of an existing instance, the door is automatically closed.
So you just have to be patient, which is not my greatest quality.