Fix 3D font selection and material lagging behind with vertical cursor motion

source/blender/editors/curve/editfont.c

@@ -247,8 +247,19 @@ static void text_update_edited(bContext *C, Object *obedit, int mode)
 	struct Main *bmain = CTX_data_main(C);
 	Curve *cu = obedit->data;
 	EditFont *ef = cu->editfont;
+
+	/* run update first since it can move the cursor */
+	if (mode == FO_EDIT) {
+		/* re-tesselllate */
+		DAG_id_tag_update(obedit->data, 0);
+	}
+	else {
+		/* depsgraph runs above, but since we're not tagging for update, call direct */
+		BKE_vfont_to_curve(bmain, obedit, mode);
+	}
+
 	cu->curinfo = ef->textbufinfo[ef->pos ? ef->pos - 1 : 0];
-	
+
 	if (obedit->totcol > 0) {
 		obedit->actcol = cu->curinfo.mat_nr;
 
@@ -259,15 +270,6 @@ static void text_update_edited(bContext *C, Object *obedit, int mode)
 		}
 	}
 
-	if (mode == FO_EDIT) {
-		/* re-tesselllate */
-		DAG_id_tag_update(obedit->data, 0);
-	}
-	else {
-		/* depsgraph runs above, but since we're not tagging for update, call direct */
-		BKE_vfont_to_curve(bmain, obedit, mode);
-	}
-
 	WM_event_add_notifier(C, NC_GEOM | ND_DATA, obedit->data);
 }
 
@@ -1056,6 +1058,14 @@ static int move_cursor(bContext *C, int type, const bool select)
 	else if (ef->pos >= MAXTEXT) ef->pos = MAXTEXT;
 	else if (ef->pos < 0)        ef->pos = 0;
 
+	/* apply virtical cursor motion to position immediately
+	 * otherwise the selection will lag behind */
+	if (FO_CURS_IS_MOTION(cursmove)) {
+		struct Main *bmain = CTX_data_main(C);
+		BKE_vfont_to_curve(bmain, obedit, cursmove);
+		cursmove = FO_CURS;
+	}
+
 	if (select == 0) {
 		if (ef->selstart) {
 			struct Main *bmain = CTX_data_main(C);

source/blender/makesdna/DNA_vfont_types.h

@@ -65,6 +65,9 @@ typedef struct VFont {
 #define FO_PAGEDOWN		9
 #define FO_SELCHANGE	10
 
+/* BKE_vfont_to_curve will move the cursor in these cases */
+#define FO_CURS_IS_MOTION(mode) (ELEM4(mode, FO_CURSUP, FO_CURSDOWN, FO_PAGEUP, FO_PAGEDOWN))
+
 #define FO_BUILTIN_NAME "<builtin>"
 
 #endif  /* __DNA_VFONT_TYPES_H__ */