Created attachment 136987 [details] Plugin for "application/vnd.pluginbug" that will show alerts for mouse-down and command-keys Plugins can show dialogs, and Safari appears to be in a modal wait loop... but only if the dialog is shown via a mouse-click to the plugin. If the dialog is shown via a command-key, Safari 5.1.5 (and the 04/12/2012 nightly) kills the plugin after 45 seconds. The attached plugin will trigger on files of mime type application/vnd.pluginbug. Mouse-down will show an alert, and that will stay forever. Any command key (I use command-K) will show the same alert with different wording, and that will be killed after 45 seconds. For the nightlies, disabling the disablePluginProcess also disables this killing.
Added to radar, 11265435.
See also: bug 85138.
Mass closing plug-in bugs, as plug-in support has been removed from WebKit. Please comment and/or reopen if this still affects WebKit in some way.