Comment 5 for bug 1687514

It seems the effect's point offset attribute being zero does not provide adequate direction for the stroke, interfering with the rendering of the canvas.

Changing the first offset value to a positive value >0 seems to allow proper canvas rendering. Even a very small value e.g. 0.000001 should be adequate.

For existing documents showing the issue, the canvas needs to be moved/scaled to redraw, after modifying the def offset_points attribute.

Attached example is a modified version of the file "after.svg" from above.

TD