I was trying to add the nrf91-modem-trace-uart snippet to my build configuration. I've found that it does not take effect when using the "Add Build Configuration" UI in the nRF Connect for VS Code extension.
I was able to the the snippet working calling west directly using the following command:
west build --build-dir build . --pristine --board nrf9160dk_nrf9160_ns -S nrf91-modem-trace-uart
When using the extension, I tried pressing the "Add snippet" button and picking the nrf91-modem-trace-uart from the drop down. But the command line for west doesn't include a parameter for the snippet.
nRF Connect for VS Code: v2024.7.13
Toolchain: v2.6.1
SDK: v2.6.1