Created attachment 91897 [details] Screenshots from API trace using plasmathemeexplorer if I change theme, we can see it jump slightly as it changes the palette, and then afterwards the SVGs apitrace shows the 3 frames which I've attached. That middle frame shouldn't exist. Not a huge problem in itself, it just looks slightly jumpy and is a bit of a waste of CPU, but more importantly it's a sign of some code being wrong which might cause other problems.