Jürgen, I had same issue on Mac 10.15.2 (and 2.3.4 not 2.3.4-1)
I however noticed that the file had US Letter as paper size. After copying the file I changed that to default and it worked. I ran diff cnew.lyx cold.lyx and this comes back 142c142 < \papersize default --- > \papersize letterpaper ie the only difference is the paper size so a perl -i -p -e 's/\\papersize letterpaper/\\papersize default/' *.lyx is in order, I think. I actually ran find ~ \ -not \( -path ~/Library -prune \) \ -not \( -path ~/.lyx -prune \) \ -name '*.lyx' \ -exec perl -i -p \ -e 's/\\papersize letterpaper/\\papersize default/' {} ';' as I would in any case only use A4 and not US letter :-)-O Synced to the practice and from what I see in the log only presentations are changed :-)-O. I put it into my handbook as well :-)-O el On 2020-02-02 19:11 , Jürgen Spitzmüller wrote: > Am Sonntag, den 02.02.2020, 17:54 +0100 schrieb Jürgen Spitzmüller: >> But maybe because I tried with a version that already has the fix for >> bug 11724. I'll try again with 2.3.4. > > As I suspected, it is a variant of bug 11724, and modifying the > referred workaround slightly fixes the document: > > * Go to Document settings and change the class to "Article". DO NOT > APPLY! > * Go to page settings and change orientation from landscape to portrait > * change the class back to beamer. NOW APPLY! > > Jürgen > > -- lyx-users mailing list lyx-users@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-users