Here you go.

What's more basic than a lack of multitasking?

Besides that, I think that Ubuntu gains from Jolla/community (libhybris), but not the other way around. I must agree with pichlo - I am also thankful to Ubuntu for easing the path to Linux many years ago, but then I am quite glad they switched the buttons to the left, because it finally made me leave for much better (and friendlier) distros. Now the line of Ubuntu's brand-moves is quite long and I'm glad I don't participate. Just few examples:

• the Mir fiasco (+spreading lies about Wayland)
• the Ubuntu Edge marketing con
• sending all searches to Amazon by default
• Ubuntu Touch multitasking
• "stealing" of libhybris