After updating to FF29, I can't open a new tab when clicking on the empty area below the tabs.
Edit: This is confirmed to be a change made by FF29, no addons have anything to do with it. See answer below.
I have Tree Style Tabs displayed vertically on the left side of the window. Opening new tab on double click is a function of Tab Mix Plus, so I am not sure if FF29 or Tree Style Tabs is responsible for the change. Does anyone know an alternative?
When I disable TST, I also cannot double click to open on the empty part of the tab row. TMP has the option to disable resize when you click this - so it appears to be an incompatibility between FF29 and TMP
I've heard that others have the problem without any plugins, so it's possible that this is simply a FF29 bug or "feature"