Minefield Less Damage Bug? (Ref Num: 3152522885)

Hey, I was testing around with remote mine/trap interactions. It seems that there is a bug/typo on Minefield. The 'Less' damage modifier seems to be generic and not just applied to Mines.

1.) I had a Lightning Spire trap that is linked to Trap and Mine Damage support, tooltip says 7960.5 average damage.
2.) I linked Remote Mine to it, as expected the "Supported Skills Deal XX% More Mine Damage" effect does not apply, tooltip still says 7960.5 average damage.
3.) Then I linked Minefield to it, unlike Remote Mine, the Less Mine Damage here is applied and the tooltip went down to 6281.8 average damage.

Screenshots in the link below.

https://imgur.com/a/Nin62hh