tastkbar application icons hidden

My application icons are not showing up on the taskbar.   While I have the start10 setting window open, the application icons will fleetingly appear as I toggle taskbar setting.  The icons become visible for perhaps a few milliseconds when I change a setting option, then they disappear again.  Please advise.

(Win10-64 upgraded from Win7-64  Lenovo X1 Carbon laptop)

 

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