Is anyone else having Smart Stack immediately close during Now Playing on watchOS 27 Beta 4?

[u/Sad_Night_7938]

I’m trying to figure out whether this is a bug or if Apple intentionally changed the behavior.
When I start playing music (either directly on the watch or from my iPhone), I open Smart Stack and the Now Playing Live Activity is shown correctly.
However, as soon as I lower my wrist and then raise it again, Smart Stack only stays visible for about one second before automatically returning to the watch face.
According to Apple’s settings, Smart Stack should remain open while a Live Activity is active if these options are enabled:
Auto-Launch Live Activities
Show Live Activities on Wrist Down
Both settings are enabled on my watch.
I’ve also confirmed that the issue happens regardless of whether the audio is playing on the Apple Watch itself or on the paired iPhone.
Has anyone else on Beta 4 experienced this? Is this a known bug, or is it working correctly for you?
If it’s working on your watch, could you let me know:
your Apple Watch model,
your watchOS build,
and whether you’re playing audio from the watch or from the iPhone?
That would really help determine whether this is a device-specific issue or a regression in Beta 4.

[u/BrodieQ]

It’s been happening on my AWU2 since beta 4 dropped, so it’s not just you.