Thomas Reporter
	Description • 9 years ago

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0
Build ID: 20150630154324

Steps to reproduce:

Upgrade to Windows 10
Have a lot of Tab's open


Actual results:

The new tab button and the minimize button are overlapping, when you click the new tab button, it instead minimizes the browser
http://i.imgur.com/P6BhKua.png


Expected results:

A new tab should have opened

	Thomas Reporter
	Comment 1 • 9 years ago

Updated link: http://i.imgur.com/2iFaI7a.png

	Loic
	Comment 2 • 9 years ago

Surely a dupe of bug 1184062 

Are you using a Firefox theme?
Are you using a special Win 10 theme?

If yes, can you try with the default themes in Win 10 AND Firefox, please.

	Thomas Reporter
	Comment 3 • 9 years ago

I changed to the default Firefox theme and it too had the same problem, http://i.imgur.com/Bahq9ND.png
I am using the default windows 10 theme

	Brian Wong
	Comment 4 • 9 years ago

Can reproduce with Tab Groups enabled. The Minimize button extends past the border provided by the lightweight theme system and into the Tab Groups button. The area for the window decorations needs to be adjusted for Windows 10.

Windows 10 Pro x64, 125% DPI scaling (default on my machine).