This may be Mac-specific as I don't recall noticing this on Windows, but I'm trying to manage my prioritize feed with two separate library windows, and I'm dealing with constant issues of it auto-scrolling back up to the top of the list.
I've had it occur just when dragging resources from the prioritized list on the left to the prioritized list on the right, but it consistently occurs if I just have another tab open next to one of the Library tabs, switch to that tab, and then back to the Library tab.