Comment 7 for bug 1664632

Realy the tree shapes are independent, you need to:
A: Create a new path and apply fill between strokes LPE
B: copy each previous path and select the fill between strokes Path and add (+ icon) the copied path to it
Limitations:
Separated paths are joined by straight line
Generated path always closed
I can fix for 0.93 the LPE to allow not joined paths and optional close and also a optional transform to allow move result instead move original paths.