I cannot confirm that hypothesis: I created a thunderbird profile in a focal VM, and imported it in a groovy VM. The application ran fine in the groovy VM after the simulated upgrade, several times in a row, and I didn't observe langpack extensions being automatically downloaded and installed in the profile directory.
I cannot confirm that hypothesis: I created a thunderbird profile in a focal VM, and imported it in a groovy VM. The application ran fine in the groovy VM after the simulated upgrade, several times in a row, and I didn't observe langpack extensions being automatically downloaded and installed in the profile directory.