GIF preview not working in Save for Web Photoshop 25.1.0

[zevendesign]

When saving for web and saving as a GIF, the animation preview isn't working. When hitting the play button, nothing happens. The saved GIFs still animate properly. The animation preview was working in the last version of Photoshop. I'm using a mac.

[Bojan Živković]

It may be Mac related, on Windows everything works fine.

[Cindy310901662z6p]

Not working for me either. I can go to the preview frame on my browser, but there's no animated preview in the export window.