Rendered whitespace characters non-uniform

I just updated from 1.66.2 to 1.75.1, and noticed the rendered whitespace characters are rendered non-uniformly. The varying brightness on each individual dot, representing a space, is very distracting. Here is how they look on 1.66.2:  Here is how they now look on 1.75.1:  Also, the inconsistency doesn't seem to be applied statically. Here is a video of the issue as I create spaces: https://user-images.githubusercontent.com/3360138/218087750-89b0bf03-8d47-4b9c-871b-474240df8ef3.mp4