This is an old story.
There is a Text Style issue only in the Expert workspace of Premiere Elements 12.
Adobe remedied that situation by going from 12 to the 12.1 Update via an opened project's Help Menu/Update. Have you been there and done that?
Before the Adobe 12.1 Update, the workaround was to do the Text Style in the Quick workspace and work between the two workspaces.
Please let us know if that 12.1 works for you.
Many thanks - I'll give that a try then. I've been using 11 and only recently upgraded to 12.
Yes, that's worked fine, thank you so much.
Thanks for the follow up. The only place that the Text Styles issue appeared was in Premiere Elements 12 Expert workspace. It did not appear in version 11 at all.
If any questions or need clarification, please do not hesitate to ask.
Best wishes as you move forward with your Premiere Elements 12/12.1 Mac projects.