162263 2016-09-20 03:24:07 -0700 style.removeProperty not working for "overflow: hidden !important" 2018-12-18 17:22:53 -0800 1 1 1 Unclassified WebKit CSS Safari 9 Unspecified Unspecified RESOLVED FIXED https://bugs.webkit.org/show_bug.cgi?id=49059 https://bugs.webkit.org/show_bug.cgi?id=129994 P2 Normal --- 1 mikes.ekb webkit-unassigned koivisto m.goleb+bugzilla simon.fraser oldest_to_newest 1231590 0 mikes.ekb 2016-09-20 03:24:07 -0700 http://jsbin.com/requfofayi/edit?js,console,output Try to set "overflow: hidden !important" style property and then call style.removeProperty('overflow'); No error if thrown but still everything remains intact. 1231703 1 ap 2016-09-20 09:43:17 -0700 Mike, can you clarify what the expected behavior is for the test case? It seems like displaying red on button click is expected, and what the test actually verifies is getting the following console output after two clicks: "hidden" "" Is this accurate? 1231715 2 mikes.ekb 2016-09-20 09:53:52 -0700 Alexey, sorry, had to explain this earlier. The test case is: clicking a button toggles to properties - background-color: red and overflow: hidden. These properties are being set/removed on every button click. With background-color everything is fine - it gets set to red and removed on the next click. But with overflow there's an issue: once you set it, you cannot remove it at all. I'm getting the following output in the console: "hidden" "hidden" What's expected is to remove that property (to be displayed "hidden" - ""). 1231762 3 simon.fraser 2016-09-20 10:45:26 -0700 Seems similar to bug 49059. 1261907 4 mikes.ekb 2016-12-20 23:32:13 -0800 Still actual for Safari 10. 1261954 5 simon.fraser 2016-12-21 08:36:33 -0800 Please test in the next Safari Tech Preview (20). 1262034 6 m.goleb+bugzilla 2016-12-21 10:58:33 -0800 (In reply to comment #5) > Please test in the next Safari Tech Preview (20). WebKit Nightly is still affected so I assume next Safari TP won't change anything. 1489148 7 simon.fraser 2018-12-18 17:22:53 -0800 I see: "hidden" "" so it seems this works now (STP 72).