"Works" in Safari on MacOS. However, there appears to be two phases of blur. The first starts immediately, the second is a total blur and starts well after I'

"Works" in Safari on MacOS. However, there appears to be two phases of blur. The first starts immediately, the second is a total blur and starts well after I've started scrolling and doesn't unbar until well after I've stopped scrolling. The whole thing is horrible from a UI perspective.