Certain LPE stacks interact poorly (e.g. Powerstroke then Corners)

Steps to reproduce:

Create new document

1. Use pen to create a line with three points forming acute angle
2. Insert Power Stroke path effect
3. Insert Fillet/Chamfer path effect
4. Pick Edit tool(F2) and select the corner point/node.
5. Try to drag.

What happened?

• Sometimes the node starts gravitating towards top-left corner.
• Sometimes it seems to attempt to create infinite number of green fillet points and crashes. YMMW
• Applying Power Stroke after Fillet/Chamfer works better but the stroke isn't smooth.
• Same happens with Pattern Along Path.
• With Taper Stroke it doesn't crash but with multiple fillet points doesn't work right either.

Inkscape Version and Operating System:

Inkscape 1.0 Beta 1

Windows 10 x64