Why was this answer edited?
The link has worked, and was clickable.
The link was linking specifically to the mobile site version of IMDb (using the prepended
m.). This is problematic since those sites are optimized for mobile devices and thus tend to look improperly on desktop devices. This usually results from people writing answers with links on mobile devices and can thus happen now and then.
However, this is easy to fix, since the normal adress of the site shows the mobile site on mobile devices anyway and the desktop site on desktop devices. So just removing the
m. is an easy fix to make the link show properly for all users and thus doesn't force users to a specific version of the site possibly not optimized for their devices.
This is a problem occuring occasionally across the network and something that's unfortunately not fixable automatically yet. But fortunately we have avid users trying to help improve the site and its users' experience with helpful edits.