I was trying to reproduce and document the bug I reported in my question
When does this functionality of tweeting button appear in an answer?
For example, I it did appear before while I tweeted:
- My answer to Stack Exchange English Language and Usage Q: What is a term for a system with rules without any exceptions?
And even in that answer this button/link of tweeting does not reappear.
Though it would have been convenient to preserve it for multiple tweeting or getting a link for copying to other boards.