First of all, yes I tried searching for this issue and while a lot of people had this issue, none of the fixes helped me.
I'm trying to make a loop cut on a cylinder, but while it worked on the first cylinder, it's not letting me do that on the second one. I see yellow dot / dots now instead of the circle. I am in edit mode. I selected the cylinder. Alt + M didn't help. I don't see why the edge wouldn't be connected to the mesh, it worked on cylinder one.
Again, sorry for bringing this topic up again but I didn't find a good solution.
Thanks in advance.