Lyrics when saved when reloaded just show up as undefined and disappear from the lyrics window

Started a new song, created sections, wrote some lyrics.
Saved the file
When reopening all the lyrics have disappeared and just shows up as “undefined” in the note display

Thanks for your feedback. It seems somehow the chorus section has disappeared completely.
I wasn’t able to replicate your situation yet. Was there something specific you did before saving, like for swapping the sections or using any special characters etc?