Custom Animated Discord Emojis

Quick question, as I can't find this problem anywhere online. Some custom animated emojis 'loop', meaning they replay their animations over and over. Some of my server's custom animated emojis loop, while others do not. Is there a way to make them all loop? I've specifically tested this by putting multiple different animated emojis in the same message, and some of them stop their animation, while others keep going as long as the message is viewed on-screen.