QuickTime buttons disappeared, but they work as 'normal', you just can't see them

Recently, I downloaded a video to be used for the children of education, since a reputable site which I've used several times and never had any problems with (like others), but when I went to play the video all the quicktime control buttons had disappeared. All that is visible on the Quicktime control bar is the level of volume slide control & video progress 'bar' & time (I've added a screenshot). Now, the same thing happens with all my videos.

All the buttons still work fine. Thus, for example, if I click where the key play would be, etc. the video will play & operate as 'normal' except just, you don't see the buttons.

I don't know what happened, as far as I know that I have not adjusted or tampered with settings or preferences, and everything was fine until I downloaded this video (although this would be just a coincidence)

I have a MacBook Pro (13 inch, mid-2012), running OS X El Capitan 10.11.5

help would be appreciated because it is boring and I can't just uninstall and reinstall as its now at part of the OS X

Have you ever tried to restart the Mac?

You can also try a startup by pressing the SHIFT key while starting the computer. Secure boot performs tests and cleaning, is much slower than the normal startup. Give him time. The desktop appears, you can restart the Mac normally.

Tags: Mac OS & System Software

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