DashedVMobject was displayed abnormal

[sundebug]

Describe the bug

when I add DashedVMobject of Square ,only horizon side were displayed.
Code:
class Test(Scene):
def construct(self):
square = Square()
dashed_square = DashedVMobject(square)
self.add(dashed_square) # Display abnormal
self.add(square.get_subcurve(0, 0.25)) # Display normal
self.add(square.get_subcurve(0.25, 0.5)) # Display Nothing

Wrong display or Error traceback:

Additional context

system archlinux .
cpu intel i7-4770
graphic Intel(R) HD Graphics 4600