User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 Build ID: 20151029151421 Steps to reproduce: When I click Home button the Options tab starts up as well. Actual results: When I click Home button the Options tab starts up as well. Expected results: The options tab should not have come up along with the current tab going to Home page.

I think I understand your problem. Steps to reproduce your problem : 1. Open a html file in Firefox 2. Go to about:preferences 3. general > homepage section 4. Click "Use Current Pages" Now when you click homepage button, both preferences tab and your desired homepage tab is opening. Steps to avoid this : 1. Open a html file in Firefox 2. Copy the url of that page from address bar 3. Go to about:preferences 4. general > homepage section 5. Paste the page url Now it should work. Detailed explanation: When you click "Use Current Pages" button, Firefox adds all open tabs' url as homepages. If you look closer, you will find "|about:preferences" at the end of the url box when you click "Use Current Pages" I have reproduced it on Linux 32 bit, with latest Firefox Nightly 45.0a1 Build ID 20151207030210 User Agent Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Firefox/45.0

Platfrom: Windows 8.1 64bit Reproduced this bug on latest Version 45.0a1 (Build ID; 20151206030448; User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0) As per comment 1 changing the status to unconfirmed to new

well, I have both affirmative and negative opinion about this issue. the button says "use current pages" not page. so it is supposed to add multiple pages. [1] but how can homepage be multiple pages ? [2] even if it is adding multiple pages, it should not add the about:preferences page itself. about fixing, I will say, either [1] change to "Use current page" and allow only one tab/page to be homepage. [2] remove the about:preferences page from that list. temporary fix for reporter is: ----------------------------------------------------------------------------- 1. open your desired homepage, and copy the url 2. visit about:preferences 3. paste your only url to the homepage field. many thanks

beside, this is a trunk