Created attachment 8533661 [details] FF34.0.5.png User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0 Build ID: 20141126041045 Steps to reproduce: Nothing unusual Actual results: Some of my icons are hidden under >> icon. Expected results: They don't have to hide, because there are a lot of free space on my bar (see screenshot)
Does this happen all the time? Can you post your add-on list from about:support ?
I think, it was some addon - I don't see this bug from the end of December.
Marking as WFM for now, then... let us know if you see it again!