Rated 3 out of 5 stars
RefreshBlocker was a useful Firefox addon which I had been using for years. Sadly, it hasn't been updated since Jan 2011.
Firefox 46 completely broke RefreshBlocker & RefreshBlocker also broke FF46 (it took me hours to find out which addon was the culprit). Mozilla has now changed its availability to pre FF46.
Since it was the only addon with this functionality, (which I really got used to having), I decided to write a brand new addon myself (with a good few additional features) .
For those who might be interested here it is "Refresh Blocker"