When I open a diagram for editing, I get red alert stripe without any text
and then no images for pieces are loaded in the diagram.
I have to export and import PGNs, which does not trigger the bug - only editing of an existing diagram triggers it, not the insertion of a new one. I sent console log and more details by mail to support@chess.com
Complicated one
Yeah, probably a bug. Is it possible that your internet connection is slow?
No trouble (yet)...
When I open a diagram for editing, I get red alert stripe without any text

and then no images for pieces are loaded in the diagram.
I have to export and import PGNs, which does not trigger the bug - only editing of an existing diagram triggers it, not the insertion of a new one.
I sent console log and more details by mail to support@chess.com