Dashboard layout not responsive on Mozilla Firefox 59.0.2

[gmacario]

The panel containing logo and captiion is incorrectly placed at right, instead than being horizontally centered inside the browser window:

Reproduced on Mozilla Firefox 59.0.2 (standard browser on Ubuntu 16.04.4 LTS 64-bit)

[gmacario]

Notice that the issue cannot be reproduced on Google Chrome

Help > About Google Chrome