Apple Watch 4 Tap to Speak Time volume cannot be changed

I just bought the Apple Watch 4 (my first Apple Watch) and just installed watchOS Version 5.1.1. I'm using the Mickey Mouse watch face and when I use the "Tap to Speak Time" it always speaks at full volume no matter what I set the "ALERT VOLUME" to under "Sounds & Haptics" on the watch or on my iPhone 6s using iOS 12.1 "My Watch" app. Can someone tell me if they have successfully been able to turn the volume down (not off) for Mickey Mouse on an Apple Watch 4? I would prefer if someone with an Apple Watch 4 respond since I think it might be an issue specific to that series. If you have been successful, please let me know your versions of watchOS, iPhone iOS, and how you were able to turn the volume down. If this is a known bug to Apple, do they plan on fixing it or do they say they never intended to have the "Tap to Speak Time" volume adjustable? Thanks!