From 29a2df4f1afab99c7dc2b54e4ddc9702356a2ca6 Mon Sep 17 00:00:00 2001
From: Claude <claude@anthropic.com>
Date: Mon, 30 Mar 2026 23:19:00 +0800
Subject: [PATCH] fix: normalize longitude for popup coordinates

Fixes #2692

When popup longitude is greater than 180 degrees, the popup
displays at the wrong position. This fix normalizes the longitude
to -180 ~ 180 range before converting to container coordinates.
---
 packages/component/src/popup/popup.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/component/src/popup/popup.ts b/packages/component/src/popup/popup.ts
index 47548f654a3..3b5099f9c6c 100644
--- a/packages/component/src/popup/popup.ts
+++ b/packages/component/src/popup/popup.ts
@@ -397,7 +397,14 @@ export default class Popup<O extends IPopupOption = IPopupOption>
       return;
     }
     const { lng, lat } = this.lngLat;
-    const { x, y } = this.mapsService.lngLatToContainer([lng, lat]);
+    // Normalize longitude to -180 ~ 180 range
+    let normalizedLng = lng;
+    if (lng > 180) {
+      normalizedLng = lng - 360 * Math.floor((lng + 180) / 360);
+    } else if (lng < -180) {
+      normalizedLng = lng + 360 * Math.floor((-lng + 180) / 360);
+    }
+    const { x, y } = this.mapsService.lngLatToContainer([normalizedLng, lat]);
 
     this.setPopupPosition(x, y);
   };