UNCONFIRMED99682
onmouseover doesn't get triggered consistently by DOM manipulation 
https://bugs.webkit.org/show_bug.cgi?id=99682
Summary onmouseover doesn't get triggered consistently by DOM manipulation
yeecheng.chin+webkit
Reported 2012-10-17 22:23:06 PDT
In an HTML page when two elements overlap, and the top element is hidden by setting the display to "none", the bottom element's onmouseover event doesn't always get sent. In particular, in the attached test page, I have it set up so the top element is hidden when I click on it. In the first case the CSS change happens immediately during the click event handler and the bottom element does get the mouse over event. In the second case, I set a timer to set the CSS display to "none" later, and the onmouseover event didn't get sent. Seems like this depends on whether the DOM manipulation happens during a mouse event handler. Two additional notes: 1) The :hover state gets triggered immediately in both cases, which seems weird to me. Basically :hover is triggered, but onmouseover isn't. 2) This seems to work correctly in Firefox/Gecko.
Attachments
Test page. Click on the top element and don't move the mouse and observe the log on the right. Ideally you should see a mouse over event. (2.70 KB, text/html)
2012-10-17 22:24 PDT, yeecheng.chin+webkit 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
yeecheng.chin+webkit
Comment 1 2012-10-17 22:24:01 PDT
Created attachment 169346 [details] Test page. Click on the top element and don't move the mouse and observe the log on the right. Ideally you should see a mouse over event.
Lucas Forschler
Comment 2 2019-02-06 09:18:41 PST
Mass move bugs into the DOM component.
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