Fix: choix format bulletin PDF BUT si préférence modifiée

app/scodoc/sco_bulletins_generator.py

@@ -292,7 +292,7 @@ def make_formsemestre_bulletin_etud(
     ):
         if bul_dict.get("type") == "BUT" and fmt.startswith("pdf"):
             gen_class = bulletin_get_class(bul_class_name + "BUT")
-        if gen_class is None:
+        if gen_class is None and bul_dict.get("type") != "BUT":
             gen_class = bulletin_get_class(bul_class_name)
         if gen_class is not None:
             break

sco_version.py

@@ -1,7 +1,7 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "9.6.27"
+SCOVERSION = "9.6.28"
 
 SCONAME = "ScoDoc"