Reply To: Problem with loop cut
Yes,
When a Loop Cut stops, you have either an N-Gon, a Triangle (but those are less likely to be missed, I mean, they are very obvious), or a hole.
That last one might be hard to notice, but it’s something like this:
Imagine that thosed horizontal Edges are really close together, you can’t see the hole and can’t understand, why the J Loop Cut stops.
As Omar mentioned, a simple M > Merge > By Distance would solve that (make sure you Select everything (A), because Merge, like most Tools work, based on what you have Selected).