Latex renders, but pdf generation(of all pages) fails

[gregjotau]

Example:

$C = {\mathbf{u}_1,\mathbf{u}_2,\mathbf{u}_3, \mathbf{u}_4 } $

Renders fine, but pdf generation fails because of the extra space at the end.

 ! LaTeX Error: \mathbf allowed only in math mode.
    
    See the LaTeX manual or LaTeX Companion for explanation.
    Type  H <return>  for immediate help.
     ...                                              
                                                      
    l.575 \$C = \{\mathbf
                         {u}\_1,\mathbf{u}\_2,\mathbf{u}\_3, \mathbf{u}\_4 \} \$
    ? 
    ! Emergency stop.

[gnestor]

@mpacer Does this sound like a bug? I can confirm that once I remove the space before the final $, I am able to download as PDF.

[deisi]

Okay, thanks for the hint with the space, I was about to file a bug report as well. I would certainly consider this a bug, because the code is valid, with or without space and it is by no means obvious to the user why this fails.