Display "side screen" Card View Intermittent

[charliecbp]

The side screen on my sync 4 display has 3 buttons underneath, an up arrow and down arrow and "card view" which enables you to scroll through the different available screens, most of the time the card view button won't do anything, up and down buttons work fine, only a few times when I have hit the card view button does the side screen let me scroll.
Any one else have that problem??

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