I am having this problem, the Edge profile image is not decreasing in size and is as you can see in the image, I have to say that I have even formatted, thinking it was something in the system, but it seems to be a problem of Edge with StartAllBack.
By the way, I have tried in the stable and insider version of windows, in all the same problem, also the versions of StartAllBack, I have tried up to 3.4.4, and also the same. Hope you can give me a solution, ty.