A regression in April 2020 for SharePoint 20210 was identified.
After one of the updates in the list below is applied, the context menu on list items in SharePoint sites may stop working.
The KB articles of the relevant KB articles have been updated to include the information in the “Known Issues” section.
Microsoft is aware of the problem and is working on a fix. The KB articles below will be updated when a fix is available.
The affected fixes are:
- KB 4484298 – SharePoint Foundation 2010 April 2020 CU
- KB 4484324 – SharePoint Server 2010 April 2020 CU
- KB 4484323 – Project Server 2010 April 2020 CU
[Update: 2020-04-27] The fix for this issue has just been released. Please apply it on each affected SharePoint Foundation 2010, SharePoint Server 2010 or Project Server 2010 server: