Support requests should start with what Ubuntu product & release you’re using, as per Welcome To Support And Help
Your details imply you’re not even using Ubuntu (yet)?
The largest difference between GNU/Linux distros in my own view is the timing of when they grab their code from upstream projects, and you can control that via what release you’re using; Ubuntu offers LTS releases with longer support lives, and thus older code than say Fedora that doesn’t have any LTS. (there are other tweaks done as different distro teams configure for a specific intended audience, but these tweaks are easy to change yourself anyway) Key is release details have different kernels, or kernel stacks available to them, so release should be consider in the question of distro (ie. timing matters).
You’ve already heard from the Ubuntu Studio lead (who [was] also happens to be involved with Fedora Jam too) too.
Either way, I don’t see anything on-topic in regards Ubuntu support, as Fedora is not a Ubuntu system, and this isn’t generic GNU/Linux support.