UI shows black images in Firefox


Images in the Event Streams UI are rendered as a black-filled shape instead of the correct image as shown in the following example:

'Event Streams UI with black rendered images'


Mozilla Firefox 76 and earlier versions block the inline CSS styling in SVG images. This is because they incorrectly apply the page-level Content Security Policy against the SVG images.

Resolving the problem

Update your Firefox version to 77 or later as the issue has been resolved in Firefox 77.