After upgrade from 34 to 35, control click still opens new tab but new tab won't load upon selection. i have to click address and press enter or click go

Question

I've used Firefox for many years, I really like it and have been readily recommending it to others.
However after finally upgrading to 35.0.1 from 34.x I now have a very annoying and time-consuming issue.
So much so that I'm thinking of attempting a downgrade!
I didn't really want to upgrade but Firefox kept bothering me and I inadvertently accepted. Is there a way to switch this upgrade reminder off?
Anyway, previously I would Ctrl-click a link and it would open a new tab but not jump to it. It would remain unloaded until I clicked it. Then it would load as normal.
After the upgrade, I Ctrl-click a link and it still opens a new unloaded tab. So far, so good. Now however, when I click the new unloaded tab, it just sits there and does nothing. I have to click the URL in the address bar and either press <Enter> or click the 'Go' arrow.
I use this feature sometimes 100s of times a day so this is extremely annoying as it adds considerable time and extra clicks to each new link I click.
I'm wondering if it could be a problem with one of my plugins. Can I temporarily disable them all at once to see if that's it?
I will try disabling the tab related plugins.
I've tried toggling 'Don't load tabs until selected' on the Tabs page from Tools menu, Options.
Any help would be thoroughly appreciated as I would like to return to being a Firefox Fan

Answer 1

It is unlikely this issue is to do with Firefox upgrading. Firefox 36 will come out any day soon you should then be on that rather than considering an outdated Firefox 34 which is now not secure, and not supported.
* See don't [[Install an older version of Firefox]]
You have not listed your plugins, and Yes you could try using Firefox's add-on manager to make sure they are all set as click to activate or even temporarily set as never activate.
I am not familiar with the add-on
* UnloadTab 0.24.7 https://addons.mozilla.org/en-US/firefox/addon/unloadtab/
That certainly may be part of the problem try deactivating that with Firefox's addon manager. For all I know this may be the intended behaviour of that addon.
Also troubleshoot the issue with Firefox's safe mode, remembering that does NOT disable plugins you will still need to do that manually.
* [[Troubleshoot Firefox issues using Safe Mode]]
Please post back with how you get on and what you have tried, Including upgrading to Firefox 36 when that is available.
[https://www.mozilla.org/en-US/firefox/releases/ Release notes]
* [https://www.mozilla.org/en-US/firefox/35.0.1/releasenotes/ Fx35.0.1 release notes]
** The pre release notes for Fx 36 [https://www.mozilla.org/en-US/firefox/36.0beta/releasenotes/ (beta)]
** Likely link to new version fx36 release notes https://www.mozilla.org/en-US/firefox/36.0/releasenotes/