As soon as I installed this version of Libre Office, the font "Modern Pictograms Pro" doesn't display. It worked fine in the previous version. I have tried using Photoshop, and the font still displays in Photoshop.
The font isn't free. Any traces/logs when launching LO from console/terminal? Also, you can give a try to 5.3.4 and use a brand new LO profile (see https://wiki.documentfoundation.org/UserProfile#macOS)
I bought the font. Okay, I will try 5.3.4.
@cryptic : sorry, but we need more information than what you have provided. 1) which "previous" version did the font work with ? 2) what kind of font precisely is "Modern Pictograms Pro" ? If it is a PS Type 1 font, then these are no longer supported.
According to http://johncaserta.com/modern-pictograms-pro/ there is also more than one version of the Modern Pictograms Pro font - which one are you using ?
Modern Pictograms Pro version 1.0
FWIW, the standard Modern Pictograms font by the same author is available under the OFL (Open Font Licence) for free.
FWIW, the free font crashes my OSX FontBook application, failing on validation. If this is the same as the Pro font, then there is something in the font descriptor for which OSX flags the font as invalid.
Despite the error, the font Modern Pictograms gets installed into my User fonts. The font is not shown in the list of available fonts in Writer Version: 5.4.0.3 Build ID: 92c2794a7c181ba4c1c5053618179937228ed1fb Threads CPU : 4; OS : Mac OS X 10.12.6; UI Render : par défaut; Locale : fr-FR (fr_FR.UTF-8); Calc: group
But this is normal given that = /Users/*/Library/Fonts/modernpics.otf is PostScript Type1 according to the OSX FontBook.app so, it is likely that your Modern Pictograms Pro font is a PS Type 1 font which is no longer supported by LibreOffice, Type 1 font support having been removed. Setting as RESOLVED INVALID - if your v1 font is not PS Type 1, then please feel free to reset this back to UNCONFIRMED
I would also point you to the discussion in bug 104701 about the reasons for removal of Postscript Type 1 font support