I attempted to change the side of the belt a inserter would place onto, while placed horizontally, facing a parallel moving belt. Instead of switching sides, the whole inserter rotated 180 degrees.
I checked to see if vertical inserters work properly and they do.
I repeated this 100% using four inserter types, also with each different tier belt.
[2.1.17] Inserter switching does not work while horizontal.
[2.1.17] Inserter switching does not work while horizontal.
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- bugreport2.png (554.63 KiB) Viewed 173 times
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- bugreport1.png (675.27 KiB) Viewed 173 times
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- factorio-current.log
- (9 KiB) Downloaded 8 times
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- Bug Report 2026.8.27.zip
- (34.5 MiB) Downloaded 8 times
Re: [2.1.17] Inserter switching does not work while horizontal.
This is not a bug. Inserters can not be told to drop on far/near lanes. Only when the drop position is ambiguous can you set left/right drop positions.
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embermctillhawk
- Burner Inserter

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Re: [2.1.17] Inserter switching does not work while horizontal.
I believe you have misread the post. The complaint is not about near/far lanes, it is about relative-left and relative-right lanes, precisely the situation where you can choose the drop position.Rseding91 wrote: Fri Aug 28, 2026 2:11 am This is not a bug. Inserters can not be told to drop on far/near lanes. Only when the drop position is ambiguous can you set left/right drop positions.
However, even if I'm right, it's still not a bug.
I believe the OP is attempting to use the "flip horizontal" key (default H) to change the relative-left and relative-right behavior of the horizontal inserters, when they need to be using the "flip vertical" key (default V).
I think part of the confusion is that they accidentally reversed the order of their screenshots, so we're seeing the "after" picture before the "before" picture. The screenshots are named "bugreport2.png" and then "bugreport1.png".
Re: [2.1.17] Inserter switching does not work while horizontal.
that checks out, i expected a button to "change lane" and was surprised to see the 180° rotation , instead one doesn't "change lane" but mirror the inserter, which means there are 2 buttons, vertical and horizontalembermctillhawk wrote: Sat Aug 29, 2026 12:19 am I believe the OP is attempting to use the "flip horizontal" key (default H) to change the relative-left and relative-right behavior of the horizontal inserters, when they need to be using the "flip vertical" key (default V).
we're seeing the "after" picture before the "before" picture. The screenshots are named "bugreport2.png" and then "bugreport1.png".
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