Often Demo Warlock receives both procs of Nightfall from glyph of Corruption and Molten Core procs and the proc textures overlap. There does not appear to be a way to move the proc textures.

Hi @Calyus and thank you for your feedback.
I didn't think Glyph of Corruption would grant the same buff as the Nightfall talent. On one hand, I'm glad it works because that's probably what warlocks want. On the other hand, I didn't take into account potential conflicts.

In the meantime, I did some digging, and it looks like it matches the reference client.

The image above was a double proc Nightfall (from glyph) and Molten Core (from talent), with what the game wants to display as overlays.

Essentially, it tells at the exact same time "please display Nightfall left and right" and "please display Molten Core left and right".

I'm not sure what is the best course of action here. Either I change one of the effects, and will mismatch the reference client. Or I do nothing, and effects may overlap. Either way, there will be a problem.