The inserter in my picture below behaved very strangely. It seemed to be stuck extending and retracting, and that limited its rotation.
Conditions to occur:
1) have a yellow inserter picking up from the corner of a belt like in the picture
2) be on low power (I was on 50%)
3) have the lane close to you have items going past often but not
Expected result: inserter would rotate and pick up items, at low speed due to power but still in one fluid motion
Observed result: inserter just kept extending and retracting and never rotate
Reproduction image:
- Blue inserter is set to Override Stack Size 1
- Electric energy interface is set to 25 kW production, 0 usage, 500J buffer size