Reihenfolge "setmathfont" ungünstig (2)

ptbposter/ptbposter-new-engines.clo

@@ -28,8 +28,9 @@
 \setmathfont{texgyrepagella-math.otf}[math-style=ISO,bold-style=ISO]
 \ifPTB@serif\else
   \renewcommand*\familydefault{\sfdefault}
-  \setmathfont[range=it]{texgyreheros-italic.otf} 
   \RequirePackage[usefilenames,weight=Regular]{firamath-otf}
+  \unimathsetup{partial=upright}
+  \setmathfont[range=it]{texgyreheros-italic.otf}
 \fi
 \RequirePackage{newunicodechar}
 \newunicodechar{^^^^202f}{\,}% 'NARROW NO-BREAK SPACE' (\u202F, 8239)