This is a tricky one to diagnose since it is not always happening.
The scenario is this:
After filling out the reply form at the bottom of a post and hitting the blue Reply button on the bottom right underneath post area, the page will not load or reply. This seems to be happening once out of every 10 or so Reply clicks for my testing. A coworker says this is happening more often for them. Since it is occasional in nature I am having a hard time figuring this out.
Do you have any ideas of what to look for?