Unable to become animation when playing gif play in Photoshop

[uhmji]

In chrome and the viewer, gif's animations are played well.

But when running gif on photoshop, it is fixed by the same layer and is not animated.

what's the problem?

[JJMack]

You do not play Gif in Photoshop. You Play Frame anymation. In your Frame Animation  panel it look like all your frame thumbnails ware the same. Nothing looks like its changing in your frame animation.

[uhmji]

Thank you for your prompt reply.

But what I'm saying is that if I press space bar to play animation, Not only does it animate thumbnail but also workspace.

The layers of the frame are united in one layer. so animation is freeze.

Is there any solution?

[JJMack]

The space bar Play the animation??? Have you tried clicking on the Play icon in the bottom of the frame animation timeline. I tried the space bar in my Windows 10 CC 2018 and it does play the animation.  I did not  know that was and option. Space to me was always the hand tool