User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36 Steps to reproduce: this is a jsFiddle that represents an issue: https://jsfiddle.net/contact/dz3vd51a/ there is an <ul> contains <button style="width:100%"> inlide <li> elements. When this list is in a position where it should overflow parent element only <button> text does this overflow, but <ul> is cropped up to parent border. Actual results: <ul> element is cropped up to parent border, <button> text overflows <ul>`s parent Expected results: I`d expect <ul> correctly overflows parent like in Chrome or IE, but quite possible that FireFox does correct rendering. I am not sure, can you clarify if FireFox way of rendering is correct? If yes, sorry a lot for troubling.
Hello, Just verified on the latest FireFox (46.0.1) and the behavior is consistent with all other browsers. So I looks like only v.45 and below had this issue. I suppose the issue is resolved.
Thanks for your report. It was probably fixed by bug 823483.