New Tabs are blank and unable to load pages. Tabs get stuck failing to load pages forever in this state
Recently, Firefox on my main PC has been having trouble opening pages. The same thing happens on my office PC, but less frequently.
Today it's come to a point where over 50% of the time I try to open a "New Tab" or open a link in a new tab, that new tab will get stuck in a state where it's either showing the URL and making no attempt to load the page, just showing a blank white page (which is wrong, I set it Firefox Home, but it happens with FF:Home or Blank).
I've tried refreshing Firefox, it hasn't made a difference. IF anything the problem is just getting worse and the browser is becoming more and more unusable.
Can anyone help me troubleshoot this? I'm wondering if it's specific to my add-on setup. It shouldn't be, I spent ages disabling add-ons one-by-one to see if it made a difference, then I found the problem even occurs in safe mode / all add-ons disabled.
Is it a recent problem with Firefox? I recall this happenning with an update maybe a year or two ago then it resolved itself, but lately the browser is becoming un-usable for me. Before, when I had tabs jammed like this, I could copy the URL and paste it into a new tab to get back to browsing, but now all the new tabs in my current session are broken like this.