New text cards have content from previous cards

Something just happened that I can’t figure out. Have been using the software for some time. I have numerous folders and cards within them. Today for some reason, when I go to add a new text card, the card has content already in the text box from another folder?

I cannot open a blank text card to add new text. The only way is to delete the content of the card and resave it?

Please help from anyone as I cant use the software. :frowning:

Thanks :slight_smile: