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I made a gif to show my problem. You can see, the first word I type always becomes a question mark, what is wrong? I am using version 10.3.

At first, there is no such problem, it shows up recently, I don't know what I have triggered.

enter image description here

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  • $\begingroup$ What does Cell > Show Expression show you? $\endgroup$ – Michael E2 Dec 6 '15 at 12:57
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    $\begingroup$ @MichaelE2 Cell[BoxData[ RowBox[{"?", "\:4e48?\:4e8b"}]], "Input", CellChangeTimes->{{3.6583964943458986`*^9, 3.658396495359625*^9}}] $\endgroup$ – matheorem Dec 6 '15 at 13:17
  • $\begingroup$ Does the solution here help? $\endgroup$ – xzczd Jan 4 '16 at 6:29
  • $\begingroup$ @xzczd Actually, I just found it automatically back to normal after so many days, I have no idea what has happened ╮(╯▽╰)╭ $\endgroup$ – matheorem Jan 4 '16 at 6:42

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