Now Playing Widget: short title won't show up

Describe the bug
In Touch Bar Now Playing Widget, with the default config (line 1 set to {title}), when the song title is 1-2 chars, the widget will just disappear. Change song title to >= 3 chars or add additional text to line 1 will mitigate the issue.
Song title <=2 can be very rare in English, but is common in some other languages.

Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):
Touch Bar

Screenshots

Device information:

  • Type of Mac: MacBook Pro
  • macOS version: 11.4
  • BetterTouchTool version: 3.571

Additional information (e.g. StackTraces, related issues, screenshots, workarounds, etc.):

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