If during Setup I select Dutch language instead of English, after installation Budgie Welcome loads, but I cannot get that screen to show to update Budgie and install Extras. The button doesn’t do anything.
Switch to English and it works.
Before Installation you are asked whether you want to install Extras/3rd party stuff. If you select that… nothing extras is actually installed. You still need to go to Budgie Welcome and Install it yourself. I believe this is the case since I started using Budgie, 19.04 and the issue still persist in 20.04.