Issue Summary

Image alpha channel for space logo defaults to body background color and not sidebar background color resulting in 'white' in the image instead of it being transparent.

• Tested inside Chrome and Safari
• This is reproducible on Data Center: Yes

Steps to Reproduce

1. Download the 'Tacos.png' file attached to this ticket.
2. In Confluence (as an administrator user), navigate to 'General Configuration' -> 'Default Space logo'.
3. Upload the 'Tacos.png' file so it is now the default space logo.

Expected Results

The transparency layer should give way to the current background color of the sidebar (a light grey).

Actual Results

The transparency layer gives way to a 'white' background instead of the correct color of the sidebar.

Workaround

You can add custom CSS at a global level (to cover all spaces that use the icon) navigate to 'Global Configuration' -> 'Sytlesheets':

.acs-side-bar-space-info .avatar-img-container .avatar-img-wrapper img.avatar-img {background: transparent;}