User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0b7pre) Gecko/20100928 Firefox/4.0b7pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b7pre) Gecko/20100928 Firefox/4.0b7pre In current Firefox nightlies <select> elements seem to loose OS styled drop down arrow when having border-radius applied to them (might be a Windows[7] only problem). See testcase.. Reproducible: Always Steps to Reproduce: 1.open testcase with Firefox nightly build on Windows 7 2.inspect select box and enable/disable border-radius 3.drop down arrow comes and goes Actual Results: drop down arrow comes and goes Expected Results: drop down arrow should stay all the time works as expected in Firefox 3.X

Norman, thanks for reporting the problem!