run LayoutTests/svg/W3C-SVG-1.1/animate-elem-30-t.svg. The animated circle may or may not follow the path. Reload over and over and notice that sometimes it does and sometimes it doesn't. It looks like sometimes it is applying the <animateTransform> and sometimes it is not.
I have similar experience. When running from script beginElement() on the same element for animateTransform more than once, it stops working. On common animate it works properly, but animateTransform is somewhat broken...
I have not seen this bug before. I reloaded the test about 20 times and the animation began on all elements, always. Maybe this was fixed?
Created attachment 99628 [details] Yes, I can confirm it looks fixed on recent beta version...