Proper handling of Non-Breakable-WhiteSpace (NBSP) character in Charts

Please improve the Charts chord rendering engine to tolerate the Non-Breakable-WhiteSpace (NBSP) characters.
When importing songs from other tools (via copy-paste) some of them can easily have NBPS characters in.
Current behaviour is that if there is NBSP character in the line then all the chords after that are rendered inline to the lyrics.
One exception to this is that if the NBSP character is first in the line then it does not mess up the chord rendering. Any other location in the line will cause troubles. Please correct this.

This is important to fix since your editors do not show the NBSP character visually so that one could notice that there is such - it is just shown as a white space like any other white spaces but has this undesired side effect.