A Deep Dungeon Possible Issue

[Kurogaea]

This may have changed recently (or it's just really rare).

Note the floor, character level, and progression chat on the right.

This happened to me most recently when I was 25 27 in gear level. I leveled up on the 20-30 floors and it only happened once for me so far (btw your synched to 25 on the 30-40 levels i believe). I think it may be complete rng and the higher our levels the more crazy the rng difference is. Does it happen often at lower floors?