1376867 - Extension icons are not scaled properly if they are not provided in perfect dimensions in the overflow panel

Status: RESOLVED DUPLICATE of bug 1367370

(Firefox :: Toolbars and Customization, defect)

Description

[Martin Giger [:freaktechnik]]

Attachment: Screenshot 2017-06-28 20.13.12.png

Steps to reproduce:
 - install an extension providing a browserAction icon bigger than 16x16px with 1x display scaling (not sure this applies to hiDPI displays). Example: https://addons.mozilla.org/en-US/firefox/addon/smart-https
 - Move its browserAction manually into the overflow panel

Expected result:
Icon is displayed undistorted

Actual results:
Icon is limited in width to 16px, but gets a 32px height.

The issue seems to be the constrain-size="true" attribute on the toolbar button and associated styles, see also the attached screenshot.

Comment 1

[Martin Giger [:freaktechnik]]

Actually, it seems to happen with all extensions that provide bitmap icons, probably with bigger sizes but not with SVG icons.