I’ve been running Roon on a Manjaro desktop using Wine for the better part of 6 months with no issues at all. Today I attempted to update Roon to 1.7 though the GUI - It failed to relaunch after the update.
In the end I trashed the application and WINE config files and started over. I had previously been using dotnet45 installed through winetricks. In order to get 1.7 going I had to install dotnet46.
Just a heads up in case someone runs into the same problems I did.