See: https://www.reddit.com/r/factorio/comme ... his_a_bug/ for original post on reddit.
Hi
I noticed a bug when sideloading on a belt can halt items already on that belt.
I believe this is unexpected. I always though items already on belt have priority over sideloaded.
I attached a video where red circuits take priority over green already on the belt.
See also attached save file with limited setup that also reproduce this bug.
Thanks
Sideloading onto a belt takes priority and stops main line
Sideloading onto a belt takes priority and stops main line
- Attachments
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- factorio_bug_report.zip
- save file
- (1.5 MiB) Downloaded 29 times
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- clip_1,754,829,508,428.mp4
- Reproduced bug
- (24.34 MiB) Downloaded 30 times
Re: Sideloading onto a belt takes priority and stops main line
No change in belt speeds in this one, interestingly. I'm curious what the transport lines look like.
There are 10 types of people: those who get this joke and those who don't.
Re: Sideloading onto a belt takes priority and stops main line
That was never relevant, this is purely dictated by the update order.Jap2.0 wrote: Sun Aug 10, 2025 3:36 pm No change in belt speeds in this one, interestingly. I'm curious what the transport lines look like.
Re: Sideloading onto a belt takes priority and stops main line
My understanding (which could very well be wrong, and often is) was that an entire segment is updated at once, so what matters is the update order of segments and the only way sideloading could have priority is if there was a break in segments where sideloading is happening. In the linked report, that was because of the difference in speeds. Here... I don't know why there's a break, but there is. To be honest, looking around my base I have very little idea why transport lines merge/split how they do.
But I guess that still falls under "no guarantee which order belts are updated in".
There are 10 types of people: those who get this joke and those who don't.
Re: Sideloading onto a belt takes priority and stops main line
Ah, I got the link from another duplicate without speed difference, but yes, they are all considered the same issue.Jap2.0 wrote: Sun Aug 10, 2025 11:37 pm In the linked report, that was because of the difference in speeds. Here... I don't know why there's a break, but there is. To be honest, looking around my base I have very little idea why transport lines merge/split how they do.