Firebug toolbar button is always shown deactivated since Firefox 51.0.1

Question

Recently my Firefox got updated to version 51.0.1. Initially it was showing some reminder check (I\'m not clear with that) related to Firebug, but I ignored it. Now, the Fir

Answer 1

Open the default Element Inspector, and click settings icon

Under the Themes section you will see Light option is checked and change it ot Firebug automatically Firebug will activated.