Hi Philbo King,
I admit the suggestion with the spaces was not really good.
But I found another workaround.
Target: I want a toolbar with the text "BETA" in the first line and only the number "5" in the second line. After that more text (in my case a description).
What I did: opened the "Charmap" (I'm on Windows, maybe it's called different on other OS). Scrolled down and found some empty "punctuation" signs that are Unicode thingies like "U +2005". Don't know what they are exactly doing, but for the toolbar button it helped.
Copy/Pasted two of them before the "5" and a few more behind and got the result I wanted.
Maybe this is useful for you too.