At the beginnig of May I bought Samsung Galaxy Buds+ (SM-R175NZKAEUA).
Everything was workign fine, but after some updates, the functionality activating Ambient sound during calls stopped working.
I found some people on Reddit having the same issue:
I have the latest SW:
Buds firmware: R175XXU0ATF2
Galaxy Wearable app: 220.127.116.1131361
Galaxy Buds+ Plugin: 1.3.20061651
I tried to reset the Buds over the Wearable app, I cleared data and cache of the Warable app, I completely removed Wearable and Buds+ Plugin and instaled it again. None of it helped.
All the features work fine (even the Ambient sound). But when I start calling, the ambient sound is deactivated.
When stop calling, it activates again.
The feature "Use Ambient Sound During Calls" is On. During my troubleshooting I was trying to disable, make a call, enable, make a call.. but it's still the same.
Regarding the Touchpad settings, I have the Left headphone set with Ambient sound mode. And I can enable the mode by touching and holding the touchpad. But when calling, it disables the Ambient sound AND the long touch mutes microphone instead of enabling the Ambient sound (I assume it is a correct behavior of the Touchpad).
It's purely about the "Use Ambient Sound During Calls" functionality. And I can tell you that on 11th of May 2020 when I bought it and installed the latest FW, it was working fine.
I have a similar issue. Ambient sound is on but during the call touchpad does not work at all.
Additionally, sound quality is poor during the call. It looks like my earbuds switch to HSP/HFP profile during the call. I think they are related to each other.