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[2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 2:41 pm
by Mnemonic
- 08-05-2026, 07-40-21.png (453.11 KiB) Viewed 325 times
When placing an underground on top of a normal belt, the underground doesn't rotate and become an upderground. It works fine if not on top of an existing belt.
Re: [2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 5:34 pm
by riking
The change log lists a change here, but that change was only supposed to apply to fast replace on an existing underground with an exit already placed. It appears that the no rotation was instead applied to all fast replace.
EDIT: In particular, fast replace on an underground that exist but does not have a matching pair should also not suppress rotation.
Re: [2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 6:44 pm
by koelkastdeur16
Same issue when placing on an existing ghost belt
Re: [2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 8:51 pm
by boskid
So far this report looks like full of observations that behavior was changed but no arguments saying why the changed behavior is incorrect which leaves me no choice to throw this to Not a bug.
Re: [2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 8:53 pm
by Bilka
It breaks the third gif in
https://www.factorio.com/blog/post/fff-206, this is clearly a bug.
Re: [2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 8:56 pm
by Trainzack
The same behavior is also occurring when replacing pipes with pipe to ground.
Re: [2.1.13] Underground belts on top of normal belt no longer auto rotate
Posted: Wed Aug 05, 2026 8:58 pm
by Bilka
Indeed, and that is shown off in
https://factorio.com/blog/post/fff-240 so also a bug that it is now broken.