Distorted animated GIF in post

I have a bit of an issue with an animated GIF in one of my posts [1].

You will noticed that aside from the first image, all other images in animation are distorted.

I have tried experimenting with other themes other than the one [2] I am presently using, but the issue persists. The odd this is that the GIF appears just fine in the visual editor and when accessed directly [3].

I could really use some help.

[1] https://wp.me/p5KxX1-kP
[2] https://www.brunocavalcante.com.br/blog/2011/01/tema-wordpress-ghostwriter/
[3] https://i1.wp.com/lightonphiri.org/wp-content/uploads/2014/11/zambia_presidential_elections_1991-2011.gif