From 618587aa48013a6331e6223d972d75cf1aa7a497 Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Sun, 30 Jun 2019 01:08:25 -0400
Subject: [PATCH] Don't allow layer changes while drawing (closes #6584)

---
 modules/ui/map_data.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/ui/map_data.js b/modules/ui/map_data.js
index d0b8475ac..1d8aad3d1 100644
--- a/modules/ui/map_data.js
+++ b/modules/ui/map_data.js
@@ -96,6 +96,10 @@ export function uiMapData(context) {
 
 
     function setLayer(which, enabled) {
+        // Don't allow layer changes while drawing - #6584
+        var mode = context.mode();
+        if (mode && /^draw/.test(mode.id)) return;
+
         var layer = layers.layer(which);
         if (layer) {
             layer.enabled(enabled);