What is the name of this error and how to fix it

there are some buttons that stick to my screen and i do not know how to remove them except with a restart

open link in new tab came on screen from chrome and it is stuck now i can not remove it
why does this happen and what usually cause this error
thanks a lot and appreciate the help
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More about what error
  1. is it really that complicated to know what is this?
    here is another screenshot showing my empty recycle bin to the top left corner stuck on my screen
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