This is in a BA space station. I've got a 3 block corridor using the Cylinder Framed. It's got a ventilator right at the end (on the right in the shot below.) The middle block has a dead O2 space in it: If I take away the third block, the centre one gets enough O2 to show as oxygenated, but the diamonds don't go all the way through: But if I do the same thing elsewhere, it's working perfectly:
So it does not work only in ONE spot where the same build works in another spot? Maybe you need to attach the blueprint and mark the area where it works and where not - so we can have a look
Here's the creative game save - you start in the right position for the O2 problem (the base is a bit of a silly size to explain the location!). Up the stairs is the examples of https://empyriononline.com/threads/wall-l-shape-medium-issues.50023/#post-314410
