Solved! Plus sign continuously appears in tab without pressing it..how to solve this??

Mar 2, 2018
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Whenever I try to type something...a plus sign appears continues and even if I try to back space it.it reappears...how to solve this pls help me
 
Sounds like a bad key/keyboard.

Desktop? Laptop? Only in tabs? Did you try a document? What browser are you using?
 
Solution