Network Loop Detection

I have several switches in the network, all of them have Network Loop Detection enabled. After reviewing Wireshark data I found that two of the switches (GS105Ev2 and GS305E) are associated with line items related to Network Loop Detection. See associated screenshot of 1 sample. I am working on the basis that this is the expected condition as it disappears when I turn off Network Loop Detection. True?

My question is why do only these two switches have these entries in the Wireshark logs when, if there was consistency, I would see all 5 Netgear switches tagged with this?