Slide master - Title textbox doesn't synchronize properly

Try Right-clicking in the off-slide area, then choose Reset Slide.  

Hi Tina Marie,

You'll also want to make sure that you're following the directions here on how to apply a slide master to an existing slide:

If you're in Normal View, do any of the following:

• Navigate to the slide you want to change, right-click anywhere in the workspace, scroll to Layout, and click the desired layout.
• Select one or more slides in the left navigation pane. Then right-click the selected slide(s), scroll to Layout, and click the desired layout. The layout you choose will be applied to all the slides you have selected.
• Select one or more slides in the left navigation pane. Then go to the Home tab on the toolbar, click the Layout drop-down list, and click the desired layout. The layout you choose will be applied to all the slides you have selected.

You can also apply layouts in Story View. Do either of the following:

• Select one or more slides. Then right-click the selected slides, scroll to Layout, and click the desired layout. The layout you choose will be applied to all the slides you have selected.
• Select one or more slides. Then go to the Home tab on the toolbar, click the Layout drop-down list, and click the desired layout. The layout you choose will be applied to all the slides you have selected.