[2.0.15] 25 items stack on one belt, no mods (minor)

[hairintd]

I was playing with belt, switching it direction several time and modifying parts, then at some point i found this stack of 25 explosives on single piece of it. Probably appeared from underground part.
Tried to reproduce this, but no luck yet.
Also lost exact log-file when this happens, attached log from this save loaded (version is the same, 2.0.15)

20241110082803_1.jpg (773.82 KiB) Viewed 394 times

location: 152.6, -27.4

[hairintd]

Ok, i found the way to reproduce it.

• You need one full-length underground blue belt full of items.

• Then you need to add same belt right after first part, but with 1 length total.

• Then rotate this short belt.

• Add couple of blue belts right on entrance of new one.

• Throw same cargo items on belt just added: you will see stack appears from underground and moves to then start of belt against it movement.

Hope this video make it more clear: https://drive.google.com/file/d/1OyAY3l ... sp=sharing
Attached save of scenario and new log (nothing suspicious there though)

[boskid]

At first this looked more like an artifact from the transport line deserialiser failure when transport belts were inconsistent (we had couple of those issues around undergrounds) where i was going to say i am not considering this to be broken, but since you have a reproduction steps that involve rotating underground belts i am going to say i am still not considering this to be broken. There are certain cases where rotating transport belts can also squash items and in some cases this is a natural (yet temporary) state of things that fixes itself when you let the items move.