katerinafm: EDIT: Now with screenshots of examples of the broken quests!

I've seen a lot of others talk about the broken quest log in the game. I thought it was an exaggeration up until I saw how it actually affects the game when I started playing myself. What the quest log says wouldn't matter, but evidently the game uses the quest log when moving between Acts of the game in order to import your choices. I've had NPCs who by looking at the wiki are supposed to help me in the final fight disappear because the quest log did not close when it should have and when I moved to another map the quest closed with the default 'didn't help' update. This goes from a couple of (seemingly?) minor quests to important ones.

Examples I can think of without opening the game:
The succubus quest (Unlikely Lovers). I helped the succubus and her boyfriend, killed the boss, escorted them to the ship, gave her the artifact she wanted and they both were there until the end of the act. Clearly I had finished the quest. In fact, the quest log, despite staying open, said so! When moving to Nameless Isle, the quest log updated saying I didn't help them and they disappeared.
Result: I miss on the NPC trader, their next quest, and the (according to the wiki) help in the final fight.

Example 2: the cow quest where you have to find the witch potion to get them back to their human forms. Transformed both of them back, yet the quest log didn't close and updated saying I didn't help once moving acts.

The latest IMPORTANT example that you'd think wouldn't be broken considering how big of a character he is in the game:
How you deal with Alexandar. I helped him by killing the Sallow man, and once I got to the Academy I persuaded him into joining me in the 'race' to the source spring or whatever it was (up until he gets killed in an unavoidable cutscene with the villain lady after the fight). Yet lo and behold once I moved to Arx I check the quest log and it updated saying I never helped him! To make matters worse Ifan is my best buddy (and romance) in the game and I really wonder if his questline ending will be bugged too now that the game thinks I never dealt with Alexandar!

This is extremely frustrating because now I have no idea how many things I've missed and WILL miss during my playthrough. These are just a couple of examples and I'm sure if I looked through the quest log more I'd find more bugs. I'm clearly nearing the end now, and I really don't want to imagine how these bugs will screw me over.

For minor quests like the cow one, fine, whatever, as long as it doesn't need to import to the next Act, it doesn't matter. But SURELY for quests that have imported choices between Acts like these and consequences, it should be a priority to fix the tagging system to make the quests close successfully when they are supposed to instead of defaulting to the 'fail' state. I imagine this happens when you don't deal with quests in either a specific order or fashion. But if you're going to allow freedom of choice in the game, then having it break the game should be one of the first things to fix!

I wanted to have a second playthrough right after finishing this one, but now that I'm seeing these imported quest bugs in my current playthrough I really have lost the desire to do so until I at least learn that my second playthrough won't experience the same bugs as well :/. Once I open the game next I will even take screenshots of the quest logs to showcase the bugs in question. Feel free to share your examples and even screenshots or bring this matter to Larian's attention!