Electrolyzer not producing any Oxygen or hydrogen.

Tried removing gas so that it goes below max pressure? Because it's at max pressure.
 

it is not max pressure even if it show it is on the Electrolyzer. But I can get it going just fine if I pump out some oxygen. The pressure in hydrogen is 500 and 1600-1700 in the oxygen.

I can see at least 4 tiles of oxygen being over 1800g any time it says Max Gas Pressure. It's not lying.
 

Still it activates and draws power.

That is the bug.

I am not trying to find a workaround. I am just reporting a bug that the Electrolyzer is activating and not producing anything.

Looks like it checks pressure every 0.2 seconds and the converter schedules an update 1 second after it becomes operational.
So 5 pressure checks have to pass for one conversion. This is where the power togglefest comes from.

Power gets checked every 0.25 seconds, roughly (thanks lag), and everything operational draws its power then.
Not much to be changed here.

The recommended change would be move the overpressure check over to the simulator like the geysers had done.