Corrupted Deceit + Bore Bug

[kJakeD]

Just got around to trying the Corrupted Deceit, and wanted to try a build focused on WS.
Fired Bore from my secondary and shot it with the C. Deceit, worked as expected. Though, if you inflict the target with the C. Deceit Mod, then try shooting the Bore, it reverts to Normal Dmg.
Now I'm wondering what other Mod Effects can cancel each other out, and if some builds players use are affected by them.