I have a strange issue. I made a few animated GIFs in Photoshop and later on I wanted to import them into a PowerPoint presentation. So far so good, but when I ran the presentation, some frames were missing or not in place.

Why is that? I have the same issue with every GIF I created.

Here's [an example of a GIF file](https://i.stack.imgur.com/gIetZ.gif) which loses frames in PowerPoint but shows without errors in browsers.