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1) Open and view two files in NetBeans (so that you have two tabs open) 2) On one of the tabs, right-click and select Float. This creates a new window in which you can see the file contents. 3) In this new window, enable the "Show Only Editor" feature (Ctrl-Shift-Enter for me). 4) The original window changes to editor-only mode 5) In the new window, disable the "Show Only Editor" feature (again, Ctrl-Shift-Enter) 6) The original window stops editor-only mode (as expected). 7) The new window becomes completely blank, the file contents no longer visible. I would expect the file contents to remain visible.