Forum Discussion
Automatically populate slide title onto the slide or menu
Be sure to change the slide THUMBNAIL text under the thumbnail to Untitled Slide and that should reset the thumbnail title to match your slide's actual title. If that's not working, check to make sure that your slide is referencing a proper Master Slide layout that uses the Slide Title Placeholder text frame.
I believe you can have only one Slide Title Placeholder per Master Slide (someone correct me if I'm wrong), so it could be also that someone created a second title place holder on a master and that one is being used in your normal slide instead? That's getting kinda deep though and unlikely IMO.
Also, If you manually drew a text frame on your slide and positioned that as your slide title, then that could be the issue as that manual text frame would have no association to the thumbnail title. It needs to be a proper Master Slide, Slide Title Placeholder.