Links with '%' (percent symbol) have '25' added in the Forums

Whenever I link to URLs containing a '%' (percent symbol) in the Forums, a '25' is automatically added after each of them.

Example: original URL
https://github.com/zjohnzheng/DeveloperAssets/blob/master/Shot%202020-06-19%20at%201.09.00%20PM.png

becomes
https://github.com/zjohnzheng/DeveloperAssets/blob/master/Shot%25202020-06-19%2520at%25201.09.00%2520PM.png

when clicked, resulting in a 404.

I don't have any web development experience but I think this bug is due to percent encoding (Wikipedia says '%' is a reserved character, and is encoded as... '%25').