I have exactly the same after a setup with ProtonVPN. Is there a solution to unset the IPV6 address or also get a address via the VPN provider?

Good to hear there is progress with the Qt 5.12 update. Reading above message it is not clear to me if you can also test this with app development using clickable. Is there a docker file with Qt 5.12 that can be used?

I thought to test apps that need Qt 5.12 by running clickable desktop. Would that be possible? One of the apps that need an update Qt is Kaidan, and I guess there are more (with potential to be ported).