Hangar pressurization breaks when docking small ships

Ras Abdoellah shared this bug 20 months ago
Reported – Awaiting fix

Found a bug that causes all air vents to error out and the entire ship can't be pressurized. Happens when I dock ships to the hangar connectors, close the hangar doors, then pressurize the room. Once the hangar is pressurized, opening the doors to the main deck causes the entire ship to lose pressure and the air vents won't pressurize if I turn them off and on again. The only way to fix it is to reload the world.


I also noticed strange behaviour when I dock ships and the hangar doors are open. Sometimes the air vent lights will turn blue, even though the hangar is open and the ship is in space. Pressurizing the hangar works fine then, but depressurizing and pressurizing the hangar again causes the bug above to pop up again.


I think it may have something to do with the connectors and conveyors. I've tested on other large ships and it seems to only break the grid and any vents connected to it. The bug is most often triggered when a ship connects to one of the connectors in the main hangar. However the bug isn't reliably triggered by this action, so it might be something else. It can't be the airtightness of the rooms themselves though, since exiting out of the world fixes it.


Video of the bug here

Replies (6)

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Hello, Ras Absoellah!

I'm sorry you're experiencing this issue. I appreciate the video you have attached which is always a great help. Could I please also ask for your save file? Is this in offline or online? If it is online, we have had a number of reports here of this sort of thing here Sadly, we have been unable to reproduce the issue so if your file is reliable, this would be a big help. If this is offline, please ignore this part but we will of course look at it either way :)

  • You can access your save files by typing %appdata% into your Windows search bar and you will be redirected to the hidden Roaming folder. After that just follow: \Roaming\SpaceEngineers\Saves. There should be a folder with your SteamID and your saves.

Please zip the file and attach it here. If you are having difficulty attaching files you can optionally use Google Drive. When sharing a google drive link please make sure it is set to be downloadable by anyone with the link.


Kind Regards

Laura, QA Department

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Hi Laura,

Thanks for responding. It's an offline creative world. After investigating a bit further, it seems the issue only occurs when the hangar doors' go from closed to open. After opening the hangar, connecting a ship while the doors are still open will trigger this bug. Closing the hangar doors before connecting a ship does not trigger break the air vents.


Here is a link to the save file

Here is another video showing my steps for reproducing the bug.


Hope this helps!

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Hello, Ras Absoellah!

Thank you very much for the save file and reproduction steps - These were a huge help! :)

I have successfully reproduced and reported the issue internally.

Kind Regards

Laura, QA Department

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Any update to when this can be fixed?

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So will this issue be fixed soon or no? From what I can tell this pressurization bug has been going on for 2 long years, but keen has yet to fix the issue. I’ve had this happen to me on a daily basis now, each time I open my hangar disconnect my miner, go mine some ore, come back, reconnect the miner and close the hangar doors then boom, no pressurization, and it’s not only in the hangar either, it will completely wipe pressurization from my whole ship. Every now and then the hangar will pressurize correctly but as soon as I open my “dumb” airlock to go into my ship then boom, the whole ship depressurizes.

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My workaround is to have a sensor that closes the hangar doors when small ships leaves the sensor field. My ship design has enough space between the hangar door and connector that lining up to dock closes the doors. By the time I've got my small ship ready to connect the hangar is already closed.

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Thanks so much for give me a workaround on this bug! This will definitely help me while they continue to try and fix the issue, so is it mainly the docking of the ship that breaks the pressurization? So all I would really have to do is get out of the miner, hit the timer block to close my hangar doors and start pressurization, then dock? Again thanks for the reply!

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Basically, yeah. On my ship closing the hangar before connecting never triggers the bug. A bit of a hassle to hop out every time you want to connect but its better than having to reload the world.

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I just tried it and still would loose pressurization after opening the hangar then re closing it, even went through all of my conveyor lines and made sure all of the air vents, 02/h2 gens and oxygen tanks were on there own line and not interconnected with anything else, but the bug still shows itself, unless I restart the server then it all goes back to normal, so I just cut the ship and am starting on a new one hoping the bug doesn’t happen to this ship 🙏 I think the other ship is just stuck with it 🤦‍♂

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I would be more then happy to load my saved files up here so you can replicate the issue, I am playing on Xbox one x and it’s happening to me on my gtx server, please let me know how to upload my saved file so I can help this Bug get fixed!

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Nice job closing the "duplicate" thread that was providing multiple ways of reproducing the bug.

Apparently this will definitely never be fixed.

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Since the older thread was marked as a duplicate for some reason, I'll repost my recording of the bug here:

https://youtu.be/9-vqzYjes9U

And my original comments working through the issue here:

https://support.keenswh.com/spaceengineers/pc/topic/pressurization-not-working-properly#comment-57637

and

https://support.keenswh.com/spaceengineers/pc/topic/pressurization-not-working-properly#comment-61673


It's been an issue for years, and on my main save, my asteroid base has almost completely stopped being pressurize-able, so I can't live in space anymore. I hope with the supposed engine updates coming we'll see things like this finally get fixed.

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Odd addition to this bug in my case where I have several individually pressurized rooms on my station that are linked by depressurized walkways acting as airlocks:

It seems the airtightness in the larger rooms of the station is completely gone, whereas the airtightness in smaller rooms is simply frozen? After connecting my drill ship via merge blocks, my smaller refinery room remains airtight even if I open the doors out into space, any rooms that were already depressurized remain that way, and my large main room loses all pressure and will not pressurize until a server restart. Also tried checking it out with BuildInfo mod and there are no detected leaks, so it's pretty clear O2 is the thing that broke. Fingers crossed those engine changes give us a fix for this!

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