Trap Triggering not working

When using the Clever Construction, the trap mastery for additional triggers and trap gem quality, traps are re-triggering at a very low rate. The rate should be around 33% with all of those sources of traps triggering a second time, however the rate seems closer to 1%.

The assumption was that possibly an enemy needs to trigger the trap to get this effect (despite Clever Construction not saying so) but it does work with Sunblast with NO enemies nearby, but at an incredibly low rate.

Thanks!

EDIT: So I just did a bit more testing with a 100% chance to trigger an additional time. Default traps will never rearm when they expire. Sunblast traps will sometimes rearm when they expire, buts its almost exactly half the expected proc rate (I have 106% chance but saw 53% rearm)