Blake - that was my initial thought when I put on the 3rd box. So re-arranged the brood frames to the middle and flanked her with honey before placing on 3rd box. When I checked back in ~3 weeks they had moved the brood back to left side! It’s one several hives that has gap in rear where bees use as secondary entrance & exits. I had previously thought of repairing or replacing these older boxes but bees seem to thrive in them and if they don’t like the gap, they propolize and close it up.
Few of the far most right frames have honey on one side and brood on the other, so there are some honey to right side but generally she is moving up to lay. She has plenty of space to lay and it’s a very healthy hive. I’ve just never seen this before.