Yes, Fatshark - horribly so. I escaped the problem with double brood because I discovered the propolising problem before I had my bees on double brood.
The top box (the super in my case) got propolised onto frame lugs in the bottom one which meant all the bottom frames lifted up as I lifted the top box. Twisting the box did not help to free them either. The bees were understandably furious by this kerfuffle.
I now cut the plastic lug rests down by about 2mm to create a bit of space above the frames.
Kitta