103936 2012-12-03 15:12:42 -0800 Long pause/hang after deleting last character of password field at bottom of large DOM tree 2012-12-04 10:56:53 -0800 1 1 1 Unclassified WebKit Forms 528+ (Nightly build) All All RESOLVED DUPLICATE 79815 P2 Normal --- 0 jmlai85 webkit-unassigned ap oldest_to_newest 781930 0 jmlai85 2012-12-03 15:12:42 -0800 Deleting the last remaining character in a password field causes a significant pause if the password field appears near the end of a large/complex page. E.g. for a password field appearing at the bottom of a large document, type in "a" and then hit delete. There is a delay that is not present for password input forms appearing at the top of the page. The pause/hang seems to be proportional (or worse) to the number of DOM elements *preceding* the password input field in the document tree. On a mobile device (tested on Mobile Safari on iOS), the hang can last for 10 seconds or longer for the slickdeals.net site mentioned below. For a real-world example: 1) Go to http://slickdeals.net 2) Click on the "Log In" link in the upper right hand corner of the page. 3) A login form should appear. Type one or more characters into the password field. 4) Delete all characters from the password field. The last character takes slightly longer to remove. For a synthetic example: 1) Download and open the attached html document. 2) Choose "Display 1000 items" 3) Enter and delete text in both password fields 4) Choose "Display 10000 items" 5) Enter and delete text in the password fields. This will hang the browser tab for an extended period of time. 781931 1 177345 jmlai85 2012-12-03 15:14:18 -0800 Created attachment 177345 Test page for reproducing issue 782716 2 ap 2012-12-04 10:56:53 -0800 *** This bug has been marked as a duplicate of bug 79815 *** 177345 2012-12-03 15:14:18 -0800 2012-12-03 15:14:18 -0800 Test page for reproducing issue password.html text/html 861 jmlai85 PGh0bWw+CjxoZWFkPgogIDxzY3JpcHQ+CiAgICBmdW5jdGlvbiBmaWxsX2RvbSAoY291bnQpIHsK ICAgICAgdmFyIGRpdiA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCJjb21wbGV4X2NvbnRlbnRz Iik7CgogICAgICBkaXYuaW5uZXJIVE1MID0gIiI7IC8vIGNsZWFyIGNoaWxkcmVuCgogICAgICAv LyBjcmVhdGUgZG9tIGVsZW1lbnRzCiAgICAgIGZvciAodmFyIGkgPSAwOyBpIDwgY291bnQ7IGkr KykgewogICAgICAgIHZhciBjaGlsZCA9IGRvY3VtZW50LmNyZWF0ZUVsZW1lbnQoImRpdiIpOwog ICAgICAgIGNoaWxkLnRleHRDb250ZW50ID0gImRpdiAiICsgaTsKICAgICAgICBkaXYuYXBwZW5k Q2hpbGQoY2hpbGQpOwogICAgICB9CiAgICB9CiAgICAKICA8L3NjcmlwdD4KPC9oZWFkPgo8Ym9k eT4KCiAgPGRpdj4KICAgIDxidXR0b24gb25jbGljaz0iZmlsbF9kb20oMTAwKTsiPkRpc3BsYXkg MTAwIGl0ZW1zPC9idXR0b24+CiAgICA8YnV0dG9uIG9uY2xpY2s9ImZpbGxfZG9tKDEwMDApOyI+ RGlzcGxheSAxLDAwMCBpdGVtczwvYnV0dG9uPgogICAgPGJ1dHRvbiBvbmNsaWNrPSJmaWxsX2Rv bSgxMDAwMCk7Ij5EaXNwbGF5IDEwLDAwMCBpdGVtczwvYnV0dG9uPgogIDwvZGl2PgoKICA8ZGl2 PgogICAgVG9wIHBhc3N3b3JkIGlucHV0OgogICAgPGlucHV0IHR5cGU9InBhc3N3b3JkIiAvPgog IDwvZGl2PgoKICA8ZGl2IGlkPSJjb21wbGV4X2NvbnRlbnRzIiBzdHlsZT0iaGVpZ2h0OiA1MHB4 OyBvdmVyZmxvdzogc2Nyb2xsIj4KICA8L2Rpdj4KCiAgPGRpdj4KICAgIEJvdHRvbSBwYXNzd29y ZCBpbnB1dDoKICAgIDxpbnB1dCB0eXBlPSJwYXNzd29yZCIgLz4KICA8L2Rpdj4KPC9ib2R5Pgo8 L2h0bWw+