User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0 Build ID: 20160705030222 Steps to reproduce: 1. Start Nightly 2. Go to any sites (e.g. about:home) 3. Open DevTools > Inspector 4. Changing the color format (Shift + click) in the Rules view > It works 5. Change the default color unit from "As Authored" to any other units in the Toolbox Options 6. Changing the color format again in the Rules view Actual results: In step 6, the first click works, but it does not work from next clicks as toggle. Regression range: https://hg.mozilla.org/integration/fx-team/pushloghtml?fromchange=712a70746d183ee33e00bc06efd48de25b7332a7&tochange=ad16491227f9cdf08fda7a3c1973562497d0f4ef Expected results: Color format change (shift + click) works as toggle in the Rules view, even if default color unit is not "As Authored".
This is a regression. In the regression range provided in comment 0, bug 1259559 seems like the culprit.
Inspector bug triage (filter on CLIMBING SHOES).