red rectangle under one superscript

Jean-Marc Lasgouttes lasgouttes at
Mon Feb 10 10:39:28 UTC 2020

Le 10/02/2020 à 09:53, Wolfgang Engelmann a écrit :
> I get a red rectangle under one superscript (see the attached lyx file)
> I use debian bullseye and LyX Version 2.3.4 (Sonntag, 12. Januar 2020)
> Perhaps a bit academic, since the pdf output seems to be ok. But still: 
> Why the red mark?

The red mark is what we put when a preview is supposedly too small, so 
that people notice the math inset. The limit value is 10 pixels at 
100dpi, therefore the equivalent of 0.1 inch. It may be that we should 
make the limit lower.


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