Description
On previewing an attachment via the activity log, the close button to close the preview of the attachment is not clickable.
The image is previewed with a dark filter and nothing happens when you click on the close button.
Release or Environment
London and above
Cause
Setting the value of the system property 'glide.ui.related_list.floating_scrollbars' to true causes this issue.
Resolution
Changing the value of the system property 'glide.ui.related_list.floating_scrollbars' to false fixes the issue.
This property is related to List v3 and is not defined in the OOB instance.