Amusingly, for https://riot.im we just shelved our WYSIWYG editor efforts after trying two completely separate implementations over the years (one via Draft.js, the other via Slate.js) because: a) it's a nightmare to get right, b) nobody used it anyway (it was optional), c) chat isn't a wordprocessor, d) markdown (commonmark) + floating formatting toolbar is good enough. Our current editor was written from scratch (c…
The fact that this industry turned to a proprietary low-quality solution like Slack when Riot/Matrix have already existed tells the full story about what a bunch of incompetent idiots we all are. Everyone frustrated with the new Slack input box deserves what they got. Me included.
I for one am showing the middle finger here; when forced to talk on Slack, I use Ripcord as a client.