Let's assume Chrome made a new release, and users with Chrome found the site to be broken. Would you make a fix?
That depends on the nature of the breakage. If it's caused by a bug in Chrome, I would file a bug report with Chromium and they would get another update out to fix the problem.
Microsoft will get a large portion of people onto Edge. It actually benchmarks faster than Chrome and Firefox. Its ... not bad. It will also allow extensions soon too, making it every bit as good as other browsers to use. And websites are going to need to adapt. Like this one.
Sorry, but the world doesn't need to adapt to every new piece of crapware Microsoft releases. The code that inserts smileys and formatting is standard Javascript that works across all browsers. If Microsoft have broken their Javascript implementation in Edge, they should probably fix that.
I'm not ruling out that it might be a problem with SMF, but I have no way of reproducing the behaviour as I have no Windows systems. Until somebody provides a more detailed problem report than "it doesn't work!" followed by a demand for us to fix it, there's no way I can even begin to investigate.
On another note, I know you pride yourself on how efficiently and well this site runs. People are going to arrive here and find stuff broken. And I know that is going to annoy you. So you've been informed, you can choose to ignore this bug issue, but I'm confident it will eat away at you until you work out why Edge works differently, fix the issue and inform the rest of the world via GitHub.
And with that ... I am finished with this thread, unless I need to come back and say thank you later.
So far, you're the only one to report this issue, despite not being the only regular using Windows 10. Unless somebody else comes forward to say they see the same problem, I'm going to assume it's an issue on your end.