Gas Filter not pulling filtered gas

I checked out some other forum posts about the Gas Pump and followed a suggestion to restart the game. Now the setup is pumping Hydrogen into the generator but oxygen is stuck in the Gas Pump. It seems like the Gas Pump has troubles with a mixture of gases.

I've had this problem too.  Gas pumps just have a lot of issues I think.  A combination of reloading/rebuilding the gas pump/gas filter sometimes will get both sides flowing, and once that happens, it'll continue to work until you load the game again.

Same for me, when using the gas filter to separate oxygen and hydrogen I almost always have it pump into the main output, so the gas that is supposed to be sieved (hydrogen) not only gets ignored, but apparently it gets plainly destroyed in the process, rendering the electrolysis setup kind of useless for energy generation purposes.

Had the sieve output work only once, and it seemed it was destroying the main gas output, too.

Same issue, selecting Oxygen to pump out to other rooms, but it actually extracts only the Hydrogen, and vice versa.