When running the layout tests fast/hidpi/image-srcset-svg-canvas.html and fast/hidpi/image-srcset-svg-canvas-2x.html in the gtk-wk2 test runner, the tests fail, and the intrinsic size of the canvas drawn SVG are half of what they should be.
When testing the same pages in gtk2 WebKit browser itself, they look as they should be.
The layout tests are available at https://bugs.webkit.org/show_bug.cgi?id=123832 or attached here.
Created attachment 216928 [details]
Layout tests reproducing this issue
Is this GTK only?
I don't think it's GTK only, but I'm not certain I've also seen it on OSX.
FWIW, I also seen the same issue in Blink.
Still failing on Mac. Marking as expected failure.