I know enough has been said about Roon’s line breaking in artist names and album titles in the header, but apart from valid cosmetic text setting issues I found a different case where a band name just should not be on two lines ever. Not sure where to put it as it’s neither a feature suggestion nor a support request nor really a Metadata issue, so here goes.
The band is Sunn O))) which is an ambient drone noise metal band or whatever you want to call it, and pretty big considering the kind of “music”. They are named after the amplifier brand, Sunn, and its logo:
In text, they stylize themselves as Sunn O))) with a space:
Roon decides to line break this which is JUST WRONG and there is no reason at all for lack of space even on portrait layout:
To Roon’s credit, it accepts Unicode special characters without crashing. And it recognizes the non-breaking space as a space, so searching and filtering for Sunn O))) with a normal space character still works fine. This is all very well done by Roon, I have to say. (Though nevertheless it should be correct by default but I guess this is an upstream metadata issue if they didn’t use a proper non-breaking space in such a case)
On macOS, go to the keyboard settings, click on the plus to add an input source and search for “hex”, then add the Unicode Hex Character keyboard. This should add a keyboard switcher icon to the menu bar if you don’t yet have one.
Go to the artist editor in Roon, click the copy button for the artist name, delete the normal space and place the text cursor. Switch to the hex keyboard from the menu bar icon. Then hold the Option (Alt) key on the keyboard and type 202F to get a narrow non-breaking space. (There is also an optional wider one by typing 2007). Save and you are done.
On Windows, you can probably simply hold Alt and type 202F. Or start the Character Map tool and copy the character from there.