source/blender/blenkernel/intern/curve.cc

@@ -409,6 +409,9 @@ void BKE_curve_init(Curve *cu, const short curve_type)
     cu->resolv = 4;
   }
   cu->bevel_profile = nullptr;
+  /* Initialize the offset to 1.0, to compensate for it being set to -1.0
+     in the property getter. */
+  cu->offset = 1.0f;
 }
 
 Curve *BKE_curve_add(Main *bmain, const char *name, int type)

source/blender/makesdna/DNA_curve_defaults.h

@@ -20,7 +20,7 @@
     .pathlen = 100, \
     .resolu = 12, \
     .resolv = 12, \
-    .offset = 1.0, \
+    .offset = 0.0, \
     .wordspace = 1.0, \
     .spacing = 1.0f, \
     .linedist = 1.0, \