Hex Editor doesn't notice file deleted/media removed like text editor does #580
Description
Text Editor will detect that the file is deleted or can no longer be reached by drawing a strike-through on the name in the editor tab. However Hex Editor does not do this, and if tabs are switched with the file deleted or media removed, Hex Editor then shows an empty view (when deleted) or stuck in a 'loading' message (when the media is removed), which indicates that Hex Editor does not keep the data loaded like Text Editor does.