Initalize font size to 16, closes #21165

scene/resources/dynamic_font.cpp

@@ -1034,6 +1034,7 @@ SelfList<DynamicFont>::List DynamicFont::dynamic_fonts;
 DynamicFont::DynamicFont() :
 		font_list(this) {
 
+	cache_id.size = 16;
 	spacing_top = 0;
 	spacing_bottom = 0;
 	spacing_char = 0;