The minimize icon is the dash. The middle icon is the window/full screen icon. It will show a double square in full screen and a single square in windowed mode. The size of the window in windowed mode is determined by whatever size it is set to. If you cannot access the edges of the window in windowed mode, With just the one application open click the Windows Task bar and select 'Cascade Windows'.

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Graham Mayor - MS MVP (Word) (2002-2019)
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That is my problem I cannot access the edges of the WORD documents. When I click on the single square or double square the doc will move slightly. So it is trying to minimize

Where is the Cascade on the WORD doc? Where is the Windows task bar or is it on the Ribbon?

Not certain if Cascade will solve the issue because it is trying to minimize my WORD docs. All of my WORD DOCs have this issue. It just started recently and as I mentioned only WORD is affected