I noticed in the Redesigned Files page, clicking on a PPTX file result in a message that says "No Preview Available" message with a download link. PPTX previews were supported in the old Files Page. They can still be viewed from modules and within the RCE. Is this temporary or is PPTX no longer a supported file format for previewing from the Redesigned Files page? I am not able to find any documentation about this.
Another question: in the Old Files Page, if I click to preview a file, then use the browser's Back button instead of using the "Close" button to close the preview window, I would see the same view or location. In the Redesigned Files Page, if I click to preview a file from within a folder, or a search result list, then click the Back button, I am taken back to the main Files page. This change of behavior can be problematic for our instructors especially when the "Close" button on the preview window that instructors are accustomed to is now just an "X". I found myself using the Back button after previewing a file many times and had to find my way back to the previous location again. Can the Back button just close the preview window without going back to the main Files page like it was before?