[wp-trac] [WordPress Trac] #43648: Browser "nag" appears when user agent indicates Linux and not Windows on FF 59.0.1 64bit

[WordPress Trac]

#43648: Browser "nag" appears when user agent indicates Linux and not Windows on FF
59.0.1 64bit
--------------------------+-----------------------------
 Reporter:  bbogart       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Security      |    Version:  4.9.4
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 My current (defauly) user agent:

 Mozilla/5.0 (X11; Linux i586; rv:31.0) Gecko/20100101 Firefox/31.0

 If I open dashboard, I get the browser nag: "It looks like you're using an
 insecure version of Firefox. Using an outdated browser makes your computer
 unsafe. For the best WordPress experience, please update your browser."

 If I change my user agent to the same version of FF but on windows:

 Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/56.0

 The nag disappears.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/43648>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform