id summary reporter owner description type status priority milestone component version resolution keywords cc 5659 Selection plugin keeps crashing Antti Leppä "CKEditor keeps crashing in background with Firefox because selection plugin uses ""tryThese"" to check if browser supports ""createRange"" function. Crashing can be avoided by refactoring code to use typeof operator instead of tryThese. plugins/selection/plugin.js:743 {{{ var self = this; var node = CKEDITOR.tools.tryThese( // Is it native IE control type selection? function() { return self.getNative().createRange().item( 0 ); }, // Figure it out by checking if there's a single enclosed // node of the range. function() { var range = self.getRanges()[ 0 ]; range.shrink( CKEDITOR.SHRINK_ELEMENT ); var enclosed; if ( range.startContainer.equals( range.endContainer ) && ( range.endOffset - range.startOffset ) == 1 && styleObjectElements[ ( enclosed = range.startContainer.getChild( range.startOffset ) ).getName() ] ) { return enclosed.$; } }); }}} Would be replaced with: {{{ var node = null; // Is it native IE control type selection? if (this.getNative() && (typeof this.getNative().createRange == ""function"")) { node = this.getNative().createRange().item( 0 ); } else { var range = this.getRanges()[ 0 ]; range.shrink( CKEDITOR.SHRINK_ELEMENT ); var enclosed; if ( range.startContainer.equals( range.endContainer ) && ( range.endOffset - range.startOffset ) == 1 && styleObjectElements[ ( enclosed = range.startContainer.getChild( range.startOffset ) ).getName() ] ) { node = enclosed.$; } } }}} The bug was discovered with Firefox 3.5.9 (Firebug 1.5.4) / Linux 64bit " Bug closed Low General 3.2.1 worksforme