It seems that instanceof SemiCircle checking for the layer in _updateCircle function of SVG renderer, added in fix fdb647e2f7672cb53a247f7e09fc1e1f928355e7, should also be applied to Canvas renderer.
Otherwise, the same error as reported in #20 will occur when drawing L.circle using Canvas.
It seems that
instanceof SemiCircle
checking for the layer in_updateCircle
function of SVG renderer, added in fix fdb647e2f7672cb53a247f7e09fc1e1f928355e7, should also be applied to Canvas renderer.Otherwise, the same error as reported in #20 will occur when drawing
L.circle
using Canvas.