Consider the following MWE to be previewed in the build in PDF previewer in Firefox

\pgfpagesuselayout{8 on 1}[a4paper,border shrink=4mm]
\bigcup_n \sum_n

Obervations: First of this is what I see in my FF.

enter image description here

Notice how the \bigcup and \sum are wrong.

Further observations:

  1. If the \underbrace is removed, things are ok
  2. if the \pgfpagesuselayout line is removed, everything renders ok.

The same file rendered in Chrome, displays just fine.

Is this some kind of artefact in FF?

  • It is an artifact of PDF.js. Request to preview in reader or open with reader outside firefox.
    – percusse
    Commented Sep 1, 2015 at 12:27
  • @percusse You can do it, but if the readers of your document won't, then it's bad :-(
    – yo'
    Commented Sep 1, 2015 at 12:33
  • @yo' Save one world at a time ;) They have a GitHub page for bug reports etc.
    – percusse
    Commented Sep 1, 2015 at 12:42

1 Answer 1


It works OK for me:

enter image description here


  • 1
    So it seems to be version related. Glad to hear that it is fixed in a newer version. My Ubuntu have given my FF 40.
    – daleif
    Commented Sep 1, 2015 at 13:17
  • @daleif: David has a time machine. :) Commented Sep 1, 2015 at 13:42
  • @PauloCereda, since when? Nightly is newer, nothing timey whimy about that.
    – daleif
    Commented Sep 1, 2015 at 13:52
  • 2
    @daleif: if I recall correctly, there's nightly, then aurora, then stable. David lives on the wibbly wobbly timey wimey Firefoxy edge thingy. :) Commented Sep 1, 2015 at 14:15

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