Workers fetching brimstone to craft cogs

GigiSan

In the process of making cogs, workers always go fetch 20x brimstone and put it in the forge, then putting it back afterwards. Similar behaviour noticed, although more rarely, also while crafting rope and fabric.

The process usually goes like this:
- order issued to make cogs
- worker fetches 3x iron ingot
- worker makes 1x cog
- worker fetches up to 20x brimstone
- worker makes 1x cog
- worker puts 1x cog in stockpile
- worker puts all the brimstone in the forge back in stockpile
- worker resumes making cogs

See the screen below, sorry I couldn't snatch the perfect moment, you'll have to take my word that the brimstone was fetched automatically.
https://imgur.com/a/If1R6

Have a nice day!
-Gigi

Shatojon

Thank you!