[wp-trac] [WordPress Trac] #52086: user-profile.min.js issue on Firefox

[WordPress Trac]

#52086: user-profile.min.js issue on Firefox
--------------------------+-----------------------------------------
 Reporter:  adi64bit      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  Users         |     Version:  5.6
 Severity:  critical      |  Resolution:
 Keywords:  needs-patch   |     Focuses:  javascript, administration
--------------------------+-----------------------------------------

Comment (by thomasplevy):

 I'm seeing this (or maybe it's a different (related?) issue) on Chromium
 linux-737027 when running E2E tests on 5.7.1.

 I have a test that visits `users-new.php` and creates a new user. The
 tests are failing with:

 {{{
     TypeError: Cannot read property 'data' of undefined

       at f (http:/localhost:8080/wp-admin/js/user-
 profile.min.js?ver=5.7.1:2:195)
       at v (http:/localhost:8080/wp-admin/js/user-
 profile.min.js?ver=5.7.1:2:1185)
       at HTMLDocument.<anonymous> (http:/localhost:8080/wp-admin/js/user-
 profile.min.js?ver=5.7.1:2:5086)
       at e (http:/localhost:8080/wp-admin/load-
 scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,zxcvbn-
 async&ver=5.7.1:2:30005)
       at t (http:/localhost:8080/wp-admin/load-
 scripts.php?c=0&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,zxcvbn-
 async&ver=5.7.1:2:30307)
 }}}

 This crops up shortly after loading the page but only when running the
 tests headless. If I "watch" the tests the issue doesn't happen.

 I have a screenshot error reporter setup on headless mode and the error
 seems to occur shortly after the page finishes loading as the screenshots
 usually show 3-5 characters entered into the user login field (which is
 the first step of the test)


 When enabling `SCRIPT_DEBUG` I no longer have an issue.

 I haven't been able to reproduce this in isolation without my plugin being
 enabled (LifterLMS). I have tried to reproduce it by performing these
 actions manually in a variety of browsers with no plugins installed but in
 all of my attempts I come out without issue. But I'm fairly confident this
 isn't a plugin.

 In the meantime I've switched my tests to run with SCRIPT_DEBUG enabled.

 Thanks

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/52086#comment:23>
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