I just created a post on community that contained a few links to URLs with ampersands, and the ampersands were incorrectly stripped, which broke the links.
Expected: [link name](https://example.com/?a=b&c=d) creates a link to https://example.com/?a=b&c=d
Actual: [link name](https://example.com/?a=b&c=d) creates a link to https://example.com/?a=bc=d