Default Startup Volume "disabled" Incorrect Behavior

Setting the default volume to disabled only works once on a fresh install.

If I set the default volume to disabled it displays 40%, but actually plays at 100%.

If I move the volume control at all, it changes to whatever I set it to and on the next reboot defaults to 100%.

The correct behavior for “disabled” should be a grayed out volume control with no ability to change it at all.