Conditional alternate "Only show icon, no text"

When running an AppleScript, we're able to have an alternate background color and alternate icon, and I feel that BTT could benefit by offering the ability to hide text as an alternate state.

I'm trying to set up a media button that shows the title of music being playing while media is being playing, but exists on the Touch Bar without a title, to be used as a button, when no music is playing. The closest effect I can achieve is by having the AppleScript return " ", but this essentially adds padding to the right of the button. I hoped I could return "" to just show the icon, but doing this seems to hide the button entirely.

Not sure if you ever got past this (or if you're still looking for a solution) but you can use a zero width space instead of an actual space.