At least the Sigil of Air. I’ve had to swap in another weapon, then re-equip my original weapon to get the Superior Sigil of Air to proc. I only noticed it a bit ago, when i realized I wasn’t seeing any lightning effects from the proc, nor the accompanying noise.
I also checked the combat logs, and it didn’t appear anywhere for a very long time. After doing the re-equip, it started proccing once more. I don’t know if this is just this particular sigil or others are affected.