very confusing figuring out how to finish the map

Fair enough. If I get a chance I will experiment with some of the many settings Portal 2 has, and also try the map on a different machine. Thanks for your response!

@Petutski (Part 1)
It's for 2 main reasons that I do not want to abandon this map and thus leave it active in the workshop:
The more important reason is that I cannot reproduce the error that players have reported. I used a clean installation of Portal 2 as well as the pre-implemented func_instance provided by Hammer for the bounce gel dropper, and I never witnessed this error once in my 25+ playthroughs I do for each of my maps for testing and finding unintended solutions. I also recompiled the map multiple times with different setups and options, but it keeps working for me.

(Part 2)
Due to that, I assume that it is not only me who does get the bounce gel. And given that the rotated buttons also worked in my other maps, e.g. Jumping Puzzle 3 - Detour, I can't think of that being the reason for the bug. I know the map is large, but I did my best w.r.t. optimization with fog and func_details to reduce hardware requirements as much as I could.

The second reason is the amount of time I put into this map and the content in the map. I simply do not want to abandon 100+ hours of work because of an error that I never saw myself.

Very frustrated. The blue gel does not drop. Apparently this is a known problem. Why leave a map in the workshop that is broken? Could have been a great map.

Yeah, there's no blue gel coming out. I was wonder if you could just add a lever instead to enable the button for the gel

So the issue still persists... I'm sorry to hear that. May I ask to make a screenshot in case it happens another time, with the indicator lights showing up but the empty dropper?
However, it is intended to be a short duration of 3 seconds where it dropps gel.

But since I used a func_instance for the dropper, I'm wondering what could cause the dropper not to work properly.

The blue gel dropper does not seem to work for me. The button clicks on for 2 seconds and the line to it lights up, but nothing comes out.

After restarting the map it worked a few times, long enough to get a (botched) attempt in, but now it's stopped working again.

Ah, you are correct. I am in the room with 2 observation rooms. Thank you for the hint! Going back to try again

@sominc Maybe I used a bad formulation: From you described, I assume you are in the room with two observation rooms, one on each side of the belt. However, the description is meant to point to the next room, that is, when you enter the conveyor belt room from the laboratories, the upper left door. To reach it, you have to use the railings. In that room, there is only one observation room and a dropper.
I'll try to rephrase the help-section.

I had to come read the help posted once I got to the conveyor room. I don't get a crate dropping. I restarted and same thing. I push the button labeled with a single dot. Walked over to other side and tried that button also. Am I missing a button? I've searched that conveyor room intensly