Bug : toDataURL ignore sometimes strokes on Kinetic.Rect

[CSI68]

Hello,

I think I've found a bug in toDataURL function. In my stage I've only text, images and rectangles with strokes to create stage border.

All work fine, but when I export toDataURL the strokes on Rect are missing or bugy in the generated file. On screen all is good.

Bugy toDataURL Sometimes missing... What I see on my screen