SVG images don't get redrawn in viewer pane

At high zoom levels, the new SVG renderer occasionally fails to redraw the image, instead displaying a scaled, pixelated version. Switching files does not resolve the issue.

working here - viewer and viewpane

Might have something to do with the mouse. With the viewer pane buttons, I can zoom into the image only to this level:

Nonetheless, I usually get a pixelated view after playing around with these five test images. The view even persists when the pane is turned off and on again.

hmmm - i clicked the zoom in button on toolbar to get it bigger than max with slider/mouse wheel

double clicking an svg (a small one) will initially grow it to viewer window size and it looks .... bleh

clicking original size and then moving the slider to furthest right, does not grow it to window - but looks how it should for an svg

then clicking the zoom in button once (perhaps smaller incremental steps needed) will grow it max window size. Looking how it should at that size.