I wanna say this is a fairly recent development.
Cutout/Glass canvases draw ontop of particle effects
I dunno if this has ever been reported, but it’s been affecting glass and other translucent materials for much longer though. Not all of them, but a lot.
I noticed this in a condo in which I intentionally setup the teleporter effects to fill up the interior of this red arch, but now the mountain canvas covers it, which wasn’t the case sometime not long ago.