With either a WebKit1 window or the fix from bug 65076:
1. Load <http://webkit.org/>.
2. Hit Cmd-P to print.
3. Hit PDF -> Open PDF in Preview.
4. Try and click a link.
This was caused by r83075.
Created attachment 121536 [details]
Created attachment 121538 [details]
Now with a coherent ChangeLog message.
Fixed in r104378.