Can't change "Output Device" to installed DAC

[buckaroo]

HI all - I've run across across a minor bug in 9.1.5 (and maybe other versions, too?)- I have a Pi 3b+ with a Hifiberry DAC+ Pro installed. When I go to "Audio" configuration and attempt to change my output device, I can't change from "0: Pi HDMI 1" to "1: HiFiBerry DAC+ Pro". When I try, it just reverts back to the HDMI entry (I've made sure that multi-room is disabled, so that's not the problem). However, I *can* choose my DAC in "Named I2S Device," and everything seems to be working audio-wise - I'm getting audio through my DAC - so I'm not sure what's getting left out by not having the correct setting for output device. Any ideas what might be going on?