The emoji integration with Chrome probably isn't completely compatible with our current forum software version or something. Some are still white boxes for me, but then I can see random ones in topic titles.
I don't think it's chrome (because I can see them on chrome, just not colorized), but rather it being Windows (or outdated IOS/Android versions, maybe?). Win 10 has emoji support and I believe 7 8 and 8.1 do as well, considering you can use the Touch Keyboard to insert them.
Either way, still missing my point lol
If you use the reply box at the bottom, and if it has an emoji inserted in it when clicking Post, it will NOT show up. In order for emojis to be inserted in your post, you have to edit it(then using full editor) or click the Options button first. They also show up when making new topics, as you have said and if you are using the mobile version of the forums on your phone.
EDIT - Here's what I mean
So, something must be in the coding of the reply box at the bottom of the topic that's preventing them from showing up, compared to the other ones that do allow them to show.
This turned into a bigger deal than I thought. lol