diff -r 66c75604f5b8 -r ef90ed0a5720 src/polygoncache.cpp
--- a/src/polygoncache.cpp	Sat Apr 08 22:09:29 2023 +0300
+++ b/src/polygoncache.cpp	Sun Apr 09 00:56:49 2023 +0300
@@ -70,7 +70,7 @@
 		if (polygon.color == MAIN_COLOR) {
 			polygon.color = ref.color;
 		}
-		add(polygon);
+		add(1, polygon);
 	}
 }
 
@@ -106,16 +106,16 @@
 			}
 		},
 		[&](const LineType2& line2) {
-			add({line2.value, line2.value.color});
+			add(2, {line2.value, line2.value.color});
 		},
 		[&](const LineType3& line3) {
-			add({line3.value, line3.value.color});
+			add(3, {line3.value, line3.value.color});
 		},
 		[&](const LineType4& line4) {
-			add({line4.value, line4.value.color});
+			add(4, {line4.value, line4.value.color});
 		},
 		[&](const LineType5& line5) {
-			add({line5.value, line5.value.color});
+			add(5, {line5.value, line5.value.color});
 		},
 		[&add, context, &reserve](const LineType1& line1) {
 			QTextDocument* const dependency = findDependency(line1.value, context);
@@ -150,9 +150,9 @@
 	Winding winding = NoWinding;
 	std::vector<WithId<PolygonElement>> result;
 	int i = 0;
-	const auto add = [&result, winding, i](const PolygonElement& poly){
+	const auto add = [&result, &winding, &i](int lineno, const PolygonElement& poly){
 		result.push_back({poly, i});
-		if (winding == Winding::Clockwise) {
+		if (lineno != 1 and winding == Winding::Clockwise) {
 			gl::invert(result.back());
 		}
 	};