There's a bug that prevents editors from capitalizing letters in the middle of a word when the Proper text setting is selected. Site admins, however, are able to make this adjustment from the Designer.
The word in question (after fixing it in Designer mode):
Collaborator setting for this element:
Basically, I had a Collaborator who could not change "Workgreat" to say "WorkGreat", though when I went into the Designer mode as an admin I was able to change it (and have it stay, as intended).
Collaborators should be able to make this text adjustment from the Editor.