Syntax highlighting for Igor code broken?

I've noticed in the past week or so that Igor formatted code inserted as a snippet on the forum is not highlighted properly. This is on macOS 10.14.2 Safari or Chrome. Weirdly, the highlighting looks OK when a reply is being composed, but after posting it is formatted using one of the other language options - not sure which. Has anyone else noticed this?


If I go to the referenced page and copy the code and insert the code snippet into the comment field designating Igor code.  The color coding works as expected.  I am on a Mac 10.14.2 and Safari.