Emojis Missing

So, this problem has been happening for around 2 days now. Some of my favorites emojis are disappearing as well as other ones in servers when I scroll through them, yet if I search the emoji name it pops up right there? The emojis appear completely fine on my computer, everything runs smoothly even though it's an old not up-to-date computer. This emoji glitch has also been causing my entire phone to glitch when I simply just have the tab open. I don't know how to handle it or what to do but I cannot just keep dealing with it, it bugs me too much.