Tablet says it can only add 6 of 7 bosses to nodes but does not add to all in ring

I added an overseer tablet to a tower in an attempt to add drop rate on bosses for some nearby Citadels.

The overseer tablet could add bosses to 7 maps.
When I slotted it, it brought up a dialog that stated "There are only 6 nodes that can have bosses added to it, but this tablet adds 7. Do you wish to continue?" (paraphrase, I cannot remember exact text).

See the linked screenshot here:



I count at least 4 nodes within the ring of the tower that do not have bosses after slotting the tablet (where the yellow person icon is).

As such I am left with the only conclusion that whatever calculation / search is being done is not correctly determining nodes without bosses and getting an accurate count.

I would expect that if I put a tablet in that says it can add something to X nodes, and then it tells me there are not enough qualifying nodes to match the max of the tablet, that after I slot the tablet, ALL NODES in that tower's radius (that aren't already complete) should have the new mechanic added.

This is clearly not the case from the image, therefor, this is a bug.