After Setting Top Priority on a Sweep Errand, My Duplicants seemed to have not performed it at all. This seemed to have happened with both normal items, and liquids.
Setting them to Priority 9, seemed to get the duplicants to put away materials faster.
In order to get Duplicants to perform work on Polluted Water Bottles, I had to adjust my Bottle Emptier to a priority 9 instead of 5.
I made a Twitch Highlight so that you can see this in action
post mortem: it seems that storage bins / emptiers need to be also set to a higher priority than normal tasks, for a sweeping action to be done during top priority.
Steps to Reproduce
Not Exact, but how I had things on my world 1. Create Storage Bins, Set to priority 8 2. Create Bottle Emptier, set to priority 5 3. Create many priority 9 task for duplicants to complete (digging, cooking, building etc) 4. Set Sweeping Errand for duplicants on items/liquid bottles for TOP PRIORITY 5. Witness no one doing the task immediately. 6. Set Storage bins and bottle emptier to priority 9, to match previously set building/digging tasks. 7. observer after the new priority set, duplicants do work (workaround really)
This issue has not been confirmed by a developer yet.