Comb between frames in different chambers is called bridge comb. Bees build it to ease their travel up and down. The only time I scrape it off is in extracting supers. The bees will just rebuild it anyway.
so this can happen in any hive or it indicates that the distance between top and bottom frame is large and thus have enough space to build comb - if i decrease the distance would they stop doing this?Comb between frames in different chambers is called bridge comb. Bees build it to ease their travel up and down. The only time I scrape it off is in extracting supers. The bees will just rebuild it anyway.