An incorrect implementation of the functionality of the block elements located on the "0" layer has been revealed. According to Feng Shui (as well as in analog and nano versions <= 20), the primitives included in the block and located on layer "0" INHERIT the state of visibility / freezing of the layer on which the block entry is located, and not the layer itself "0". Those. they are visible if the block layer is visible and not frozen.10.0.0.0.1 192.168.1.254 With surprise (more precisely, I was dumbfounded!) I came across a curve implementation of this feature in 21.0.