I'm having same problem. I have kenyan type hive? The sides are angled. I use 19" long top bars foundationless. I've never had bees attach the entire side of comb to side wall, only a spot or two for bracing, but they are now.
I'm wondering if I just got the angle so out of whack bees are building comb accordingly.
I've had to cut the entire side of comb with knife away from wall to remove bar. That is an accident waiting to happen. This was a new hive I built and I coated the inside walls with melted bees wax, too much I'm afraid. I wondered if I had overstimulated them by doing that?
Did you resolve your problem?
