Newly created glass interacts with surface below forge

I am experiencing this same thing with a glass forge built outside any room in mixed air (1.5kg O2 in the immediate area).  Pipes are fully insulated abysallite and only the very first pipe breaks, repeatedly and 5kg of glass drops to the ground per batch with the remainder going down the pipe to the exit normally.  Base is on normal igneous tiles.  I'll try and replace them and report back.

So that was interesting.  I built a single insulated abysallite tile under the spot where the dupe stands when using the forge and the problem repeated.  I then noticed that the forge had 0kg of 900C glass in it so I cancelled the forge orders and did a forced empty.  Running it again worked fine.  I then replaced the tile back to the original igneous and it continues to work fine.

When I built the forge originally I used regular absallite piping which broke in multiple locations.  I replaced it with insulated igneous pipes which broke even worse.  I then replaced it all with the current insulated absallite piping.  I am now wondering if that history caused the stored 0kg of cool glass which was causing the false breaks.  Perhaps the only bug here is that the forge should not store 0kg of glass when the pipes are not clogged which would then remove the false temperature problem.

Edited July 5, 2018 by malloc

The problem persists, those mechanics really should be made more obvious or removed all together.

Smells like poor game design