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For example, I'm typing this:

enter image description here

When upon hitting the last character it gets converted to:

enter image description here

And trying to Convert To TraditionalForm has no effect. This glitch has happened a few times and on different characters each time. Is there a reason for this happening?

EDIT - By request from Mr. Wizard, here is the Cell Expression (and what was displayed) of the cell to which this just happened.

What was displayed:

Overscript[u, .], 
  t] = \[DifferentialD]Subscript[u, t]/\[DifferentialD]t\[InvisibleComma], 
 where Subscript[u, \[Placeholder]]

Cell Expression:

    RowBox[{"Subscript", "[", "\n", 
        FontWeight->"Bold"]], ",", " ", "\n", "  ", "t"}], "]"}], " ",
     "=", " ", 
      RowBox[{"Subscript", "[", 
       RowBox[{"u", ",", " ", "t"}], "]"}]}], "/", 
     RowBox[{"\[DifferentialD]", "t"}]}]}], "\[InvisibleComma]", 
   RowBox[{",", " ", "\n", " ", 
    RowBox[{"where", " ", 
     SubscriptBox["u", "\[Placeholder]"]}]}]}], TraditionalForm]],
 FormatType->"TraditionalForm"]], "Outline5",
 CellChangeTimes->{{3.5589693713435035`*^9, 3.5589693812760715`*^9}, {
   3.5589694358751945`*^9, 3.5589694980697517`*^9}, {
   3.5589695385210657`*^9, 3.5589695520988417`*^9}, {
   3.5589695873348575`*^9, 3.558969609079101*^9}, {
   3.5589701806157913`*^9, 3.5589702522708893`*^9}, 
   3.5589703063239813`*^9, {3.558990416805235*^9, 
share|improve this question

closed as off-topic by m_goldberg, MarcoB, C. E., halirutan, Sjoerd C. de Vries Sep 30 '15 at 6:45

  • The question does not concern the technical computing software Mathematica by Wolfram Research. Please see the help center to find out about the topics that can be asked here.
If this question can be reworded to fit the rules in the help center, please edit the question.

Are you able to reproduce the error? If you can, please select the cell (with the cell brackets at the right), right-click, and choose Copy As > Cell Expression, then paste the result into your question. Also, which version and platform are you using? – Mr.Wizard Oct 11 '12 at 16:15
Thanks for the reply. When it happens again, I'll paste the result. I'm using Mathematica 8.0 on Windows 7. – Mirov Oct 11 '12 at 16:22
+1 It has happened to me too and never bothered to check or try to reproduce it so as to investigate. I just assumed I accidentaly pressed some wrong hotkeys or something. Hasn't happened often lately – Rojo Oct 12 '12 at 4:52
I'm voting to close this question as off-topic because the problem the user is experiencing can not be reproduced by others. – m_goldberg Sep 30 '15 at 1:52