The image at the right shows the panel with the tabs at the bottom not displayed correctly. Simply closing and reopening the panel usually fixes this. There are some JavaScript libraries that Photoshop needs to load to display the panel correctly. Closing and reopening the panel often resets these and the tabs display correctly from then on. (NOTE: If you are using a version of Photoshop CC that was not installed through the Creative Cloud desktop application (a "cracked" version), this simple fix probably won't work.)