From e4e1638fc007aaa54ea4ab30ea1743c8dc3df85f Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Date: Mon, 19 Dec 2022 11:31:27 +0100
Subject: [PATCH] Fix newly introduced rendering bug for thin rectangles

---
 crates/epaint/src/tessellator.rs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/crates/epaint/src/tessellator.rs b/crates/epaint/src/tessellator.rs
index fd4b2edd..062d18ae 100644
--- a/crates/epaint/src/tessellator.rs
+++ b/crates/epaint/src/tessellator.rs
@@ -1316,16 +1316,18 @@ impl Tessellator {
                 self.tessellate_line(line, Stroke::new(rect.width(), fill), out);
             }
             if !stroke.is_empty() {
-                self.tessellate_line(line, stroke, out);
+                self.tessellate_line(line, stroke, out); // back…
+                self.tessellate_line(line, stroke, out); // …and forth
             }
         } else if rect.height() < self.feathering {
             // Very thin - approximate by a horizontal line-segment:
             let line = [rect.left_center(), rect.right_center()];
             if fill != Color32::TRANSPARENT {
-                self.tessellate_line(line, Stroke::new(rect.width(), fill), out);
+                self.tessellate_line(line, Stroke::new(rect.height(), fill), out);
             }
             if !stroke.is_empty() {
-                self.tessellate_line(line, stroke, out);
+                self.tessellate_line(line, stroke, out); // back…
+                self.tessellate_line(line, stroke, out); // …and forth
             }
         } else {
             let path = &mut self.scratchpad_path;