[wp-trac] [WordPress Trac] #41892: Widgets Disappear from Admin 4.8.1

[WordPress Trac]

#41892: Widgets Disappear from Admin 4.8.1
--------------------------+-----------------------------
 Reporter:  judyvedder    |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Widgets       |    Version:  4.8.1
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 I have seen similar reports of this bug - such as #41659 - I am hoping
 that this additional detail will get this bug higher in the list to fix.

 I have a copy of a website in a test environment. If I add a widget to a
 sidebar that was on the website prior to upgrading to 4.8.1, such as
 "Custom Menu" or "Recent Posts" it appears to behave correctly. However, I
 have added three new plug-ins: "jQuery Archive List Widget", "List Custom
 Taxonomy Widget", and "Collapsing Archives" since the upgrade. I have done
 the below testing with each plug-in being the only active plug-in.

 When I put one of the widgets in a sidebar and save, I can go to the page
 where the sidebar is and see the widget functionality (sometimes), but
 when I return to the widget admin area the widget is no longer listed in
 the sidebar. When you go back to the page the sidebar functionality is no
 longer showing. It just disappears!

 It seems that when you add the widget back to the sidebar multiple times
 the plug-in functionality does not always show on the page with the
 sidebar. It just stops working.

 I have confirmed this behavior with ALL plug-ins disabled, except for one
 of the new plug-ins I listed above, and theme Twenty Sixteen activated.

 I am hoping that this issue can get resolved asap.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/41892>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform