User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 Build ID: 20170611100318 Steps to reproduce: Sidebar extensions are a great use for WebExtensions. However, I see a fundamental problem here: you can't have two sidebars open simultaneously. This means I cannot use TabCenter Redux and my own sidebar extension at the same time. This is very annoying. If you would allow 2 sidebars, the most problematic scenarios would be solved.
Status: UNCONFIRMED → RESOLVED
Closed: 2 years ago
Component: Untriaged → WebExtensions: General
Product: Firefox → Toolkit
Resolution: --- → DUPLICATE
Duplicate of bug: 1328776
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