I’d imagine from the response time of building in bloxburg that CSG is not being used to generate windows lol, live CSG on that scale would take 10+ seconds to render. This is most likely just clever math.
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If Roblox doesn’t fix this bug, I’ll have to change the strategy, creating four independent parts surrounding the window, and adjusting its sizes to match the desired result.
Even if the bug is fixed I would reccomend this strategy, it’s a lot easier to modify and live CSG times are way to slow to be practical in production games.
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For now it might be a good idea to switch back to the Legacy CSG system which is more stable and less likely to produce this bug, until Roblox eventually removes it.
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It’s still there for now, so you may as well take advantage of it whilst it’s still around
Or… you can try and recreate it in a 3d modeling program?
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I think the use of 3D programs is always the first choice for everything related to complex meshes, EXCEPT when the spacing between subparts must be varied, as in my case, where the position of holes for windows must be calculated automatically during the execution of the program; in this case, a static mesh will not do.
@Azuc If you are experiencing this issue concistently, you can do 2 things:
-
Export your union as a mesh, and then import it in the studio
NOTE: Colors and textures will not keep, and you need to do one-union-per-colour
(basically all the unions must have 1 color) -
Separate your union until you get visible results, for example if you made a union in 3 phases, you must separate its phases until it becomes fully visible (this method worked with me)
@wobleh don’t give up, try this 
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Thanks for the help, I appreciate it. However, it shouldn’t be the job of builders to have to go through all this hassle just to recover work they spent a lot of time on. I’m primarily a modeler so this doesn’t affect me as much but ROBLOX should be sorting this out, it’s been happening for a long time.
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Roblox should take this issue seriously because it’s so darn old that it basically became a meme, and i can’t believe how they still don’t do anything do fix it as it’s been here for ages.
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This is still an issue seems to happen when you save to file and don’t publish something then come back to it and its invisible try to separate and the objects just disappear
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I’ve also been having issues with unions going corrupt, the biggest issue for me is it’s 100% guaranteed. Both CSG v1 and v2 have this issue, so I’m essentially screwed over until it’s fixed. Worst of all, it always happens while I’m working on them so I can’t even do the export then import as mesh because they ain’t even finished.
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I highly support this to be fixed. Roblox must fix this issue; it’s been years and they didn’t fix it. My friend is building a lot and Unions are very useful for him but they keep getting corrupted and he has to rebuild them each time. This problem is even a meme.
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It seems that this is currently a team create issue and rejoining usually fixes it, I haven’t had my unions disappear in awhile.
Couple months ago I had a game that I was the only one working on it, and Team Create was off, and all the Unions were gone so I am not sure about that, unless they did something about it. Now I just avoid them as much as possible as they aren’t reliable.
I do remember unions being updated, so that could be the reason as to why they vanished, not too sure though.
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My unions keep going missing even if I’m not using team create or if I just created them, saved/published my game and then opened it back up.
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An example would be when I quite literally made two cylinders and made a hole in both of them, both of them went missing.
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