[wp-trac] [WordPress Trac] #42314: Customizer hangs on the "downloading" full overlay when closing the FTP credentials modal

[WordPress Trac]

#42314: Customizer hangs on the "downloading" full overlay when closing the FTP
credentials modal
--------------------------+-----------------------------------------
 Reporter:  afercia       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  4.9
Component:  Customize     |    Version:  trunk
 Severity:  normal        |   Keywords:  has-screenshots needs-patch
  Focuses:  ui            |
--------------------------+-----------------------------------------
 Splitting this out from
 https://core.trac.wordpress.org/ticket/42205#comment:11

 - force the FTP modal to appear as described in #42205
 - apply the patches from #42205 and #42184 if not merged yet
 - go to the Customizer > change theme > wp.org themes
 - click on theme details to open the details modal and then install
 - or click directly on Install & Preview
 - the FTP modal opens correctly

 However, when closing the modal (press "Cancel") the Customizer hangs on
 the "downloading" full overlay, see screenshot below. There's no escape
 from there, the only chance is refresh or browser's Back button:

 [[Image(https://cldup.com/lOuhciR29P.png)]]

--
Ticket URL: <https://core.trac.wordpress.org/ticket/42314>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform