Recently, on certain sites, Firefox Multi-Account Containers extension has been ignoring my assigned tab colours, and picking them up from the site open within the tab. I can’t share URL’s to demonstrate this as they are dev sites only available locally right now.
I assume this is a bug? Is there a particular style declaration that might be overriding the style for the tab? It messes things up for me because I can’t tell at a glance whether a tab is admin/front end etc.