If my Firefox has been running for a long time, it becomes unable to response to my clicks on vote, comment, acceptance of answers,..., i.e. for operations that do not need to leave the current web address. I guess these are related to some fancy webpage features? But it still works for operations that requires going into a different address, such as edit.
My solution is to restart Firefox and the problem will be gone.I was wondering why the problem happens, and how to solve it without restart? Thanks!
PS: my problem comes from my firefox, so I ask here; but if it helps, I will ask at meta.