[1.1.50] Bots taking items from chests without creating signal

[Calibretto22]

Game version 1.1.50 (and probably earlier)
Mods: none/vanilla/irrelevant

I built a circuit that registers when items are taken from a chest.
When a Item is removed a negative 1-tick-pulse is created.

But under certain conditions taking an item does not create such pulse.
The condition is: when a inserter puts the same item in the same tick into the same chest.

I'd expect a signalchange under every condition when a item is put or taken from a chest.

I consider this a bug.
I am not sure if the devs share this point of view. A change may impact gameperformance severely.


Recreate this situation:
Load the save at the end of this post (with or without mods - they don't matter).
The game is paused in editor.
Run the game for 15350 ticks. You can speed up to 4x. Do not change any entities.

Normal operation is: not lees or more than 5 speed modules are in circulation - either on the belt, to the requester or on their way into a beacon. When a module is taken from the chest a replacement is put on the belt and is delivered to the passive provider.

After 15350 ticks you should see something like this: A bot is closing in on the passive chest.
Forward in single ticks.
In a few ticks the bot will take a module from the chest while the inserter is putting another module in.
No signal-change is happening.
From now on only 4 modules are in circulation.
I consider this a bug.

Explanation of circuit: https://drive.google.com/file/d/10DXCVv ... poug7/view
Download example savefile: https://drive.google.com/file/d/10GHqaH ... hZRjT/view

[Loewchen]

I built a circuit that registers when items are taken from a chest.
When a Item is removed a negative 1-tick-pulse is created.

That sounds like a weird assumption. Moved to Gameplay help.