@MzMelonz I don't mean this to seek sympathy or anything, and I'm certainly not using it as a way to mock others in a similar situation, but I simply don't have a life and I'm not in a very good place overall so for me being able do things like that are great ways to distract myself and get my mind in a better place even if just temporarily. It certainly wasn't very fun sitting for who knows how long and watching characters walk downstairs, but hey if it can potentially help anyone and also get my mind of off the crappy things then as Beavis and Butt-Head used to say... "we're there dude" lol. Plus listening to music as I experimented helped significantly.
I do think I need to try more experiments now though. When I replaced The Solar Flare with the gym I also switched the lot type to a gym, so I think I need to test just changing the lot type to see whether or not the lot type does actually impact things in any way. One other thing I feel I should test is in regards to when I tried moving The Solar Flare to an empty lot. In it's default location I tested whether or not the sims would glitch when they only had the side door to use, but when I tried moving the place to the empty lot sims were only using the side door and I didn't test the front one.
@MzMelonz Thank you, I appreciate that, though it's been too long and I pretty much gave up long ago.
Back on topic, I tried changing the lot type of the Solar Flare to a gym without actually changing anything about the place (I did add in some exercise equipment and showers to meet the lot requirements though) and I was still getting the glitch. I also tried changing Movers & Shakers to a lounge type, adding in the required lounge items, and I didn't see any problems with the stairs there. So I have to guess that certain lots, or at least the buildings on them, have some sort of routing issue going on when leaving the area. I'm still not entirely sure though, and I'm starting to doubt if some of the tests I did were good enough.
I ended up turning the Solar Flare into a single floor building, and moved all the things on the main floor to ground level. I originally did it for fun, but seeing as how it eliminates that glitch I ended up saving it to my library and using it in my main save.
