"Show desktop" suddenly happens without my asking

  rogcorke 11:47 03 Jun 2017

Over the last few days windows have been suddenly flying off the screen of my Macbook, as though I’d hit the “Show Desktop” feature.

It happens when I hit a key but it can be any key – and it occurs with Word documents, internet pages and emails.

I'm a Windows keyboard and mouse but, until now, keyboard and mouse have worked fine with it.

I went to System preferences and switched off Show Desktop in Trackpad (even though I use a mouse instead of the trackpad). It's still happening!

I last did an OS update to 10.11.6 on May 25. It's only been happening since then and so I think it must be connected with that. Anyone got any solutions? thanx roger

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