Trap/Mine Curse Mechanics and Impending Doom

Has anyone seen further clarification on this line in the hotfix notes?

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We clarified earlier that Curses would expire when you die, however we should have further clarified that this behaviour also applies to anything that dies/expires after applying a Curse. This means that Traps with Curses are currently working as intended.

The way this is worded, impending doom should trigger when the hex is removed when the trap/mine expires if it was cast by trap/mine support, but it does not...

I have tested this in game and impending doom says it can support a curse skill when also supported by trap/mine, and you can see the curse "end" on the monster when the trap/mine expires, but the doom blast does not occur.

Impending Doom support triggers a skill when the hex ends.

Traps, mines, and totems are not able to trigger skills.