Part of my puzzle requires the player to put and excursion funnel directly underneath a paint dropper (to slow down the paint) but occasionally the paint just completely disappears when the funnel hits it.

It's not just hitting the edges of the dropper and thinning, because I've literally watched the gel disappear as soon as I finish placing my portals. At first I thought it was a rendering thing, so I tried just ignoring it and moving on to the next step but the paint never showed up.

My only guess is that it has something to do with the excursion funnel colliding with the info_paint_sprayer entity, but I don't really know. Any help would be appreciated.