Hi, In the latest Pharo image there is a rogue instance of GLMSystemWindow. If I do in the console the following code I get one instance: /pharo Pharo.image eval "GLMSystemWindow allInstances" an Array(a GLMSystemWindow(58720256)) There are actually two windows, but one is RubFindReplaceDialogWindow and it should have no link with the glamour window. ./pharo Pharo.image eval "SystemWindow allSubInstances" an OrderedCollection(a RubFindReplaceDialogWindow(534511616) a GLMSystemWindow(58720256)) If I create another window that contains a morph that can take the focus then the glamour window disappears and the new window stays: ./pharo Pharo.image eval "(PluggableTextMorph on: ' ' text: nil accept: nil) openInWindow close. Smalltalk garbageCollect. SystemWindow allSubInstances" an OrderedCollection(a SystemWindow(234094592) an EditorFindReplaceDialogWindow(130547712)) Any idea if the find-replace service from rubric/textmorph holds one somehow to the last opened window or if there is another global cache that does it? Cheers, Andrei