Entering text in the input text box accidently opens file open dialogue

Question

I was entering a search text in the input text box of a website. But the first character I typed opened the "file open dialogue" (file explorer). I was using Windows 10 and Chrome. I started typing the character "o". This was not programmed behavior, my institution owns the site. After some meddling with the mouse and desktop it disappeared. But I don't remember how. I cannot reproduce this error. Does anybody have an idea what caused it?

Answer 1

You have accidentally pressed Ctrl or it got stuck. Ctrl+O is a common keyboard shortcut for Open.