Hi,
I’ve tried to re-create the problem on my test environment, but it works correctly. If you have any type of cache or minification enabled, make sure to clear them all: CDN, browser cache, page cache, static content cache, minify cache etc..
The animations are generated to the CSS file, and if it’s cached, then it might not have an effect immediately.
If nothing helps, then can you please add temporary FTP and back-end details, so I can check the issue directly?