Set spending to 100% social and view a planet with no social project or upgrades available. Some planets are still spending money as if it had a project to work on.
Lets say I had a galactic wonder that I wanted constructed on one of my 10 planets. I set industry to 100% and full social spending to get it done fast... all 9 other planets are spending money as if they had projects to work on even if they are shown as working on nothing. Since the bug doesn't happen with military spending (if there's no military project, no money is spent on military regardless of slider settings) I can offset the problem by setting the planets with no social projects to military focus to reduce the amount they are dumping into non existant social projects... pretty tedious and only partialy effective workaround ;(
I'll update with screenshots if you want em, can anyone else confirm the bug?