[ErrantX]

Oh wow! That explains wierd artifacts I've been seeing since El Capitan, when using my trackball mouse. The cursor randomly grows in size, usually when I move it between screens quickly. I expect it's some "random jitter" in my using the trackball that causes it to happen.

[bobbles]

This might help http://www.cultofmac.com/392027/how-to-turn-off-el-capitans-...

[brobinson]

Yeah, I thought I was losing my marbles until I saw someone mention it on HN...

[elwell]

Case in point why the OS is a terrible place to allow a hacky ethos.

[kuschku]

Yes. Popping up a notification the first few times (or the first time after a few months of not using it) would be neat.