Created attachment 8872825 [details] Screenshot 2017-05-30 16.15.16.png STR 1. Install some add-ons 2. Click on the hamburger menu, go to customize 3. Right click on an add-on and select "Add to overflow menu" 4. Note that the icon is vertically stretched for add-ons but not for builtin buttons In the example screen shot on Windows, "sort tabs by URL" and "triage with me" are add-on icons and stretched. Not sure if this is photon, webextensions or other bug. Going to start with Photon and please tell me if its something WebExtensions should fix.
We're aware of this. :-)
Err, whoops, wrong dupe.