@maxgerhardt , the use of “extra_script.py” is to add a 2s delay while uploading. Removing it , however, didn’t affect the issue.
RAK4631 is using Adafruit nrf52 core, and Adafruit core is using TinyUSB and yes TinyUSB is in the build. Why is that an issue now ? It wasn’t before.
And lastly yes, adding this in platformio.ini fixes the issue, but why ?
lib_archive = no