From d0fcae1b15d81f7f7baa6ae1bc40118b68c8639a Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Mon, 7 Aug 2017 00:23:53 -0400
Subject: [PATCH] When drawing, ignore accidental clicks on mode buttons
 (closes #4042)

---
 modules/ui/modes.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/modules/ui/modes.js b/modules/ui/modes.js
index fca3e07e9f..ab4bdb024c 100644
--- a/modules/ui/modes.js
+++ b/modules/ui/modes.js
@@ -35,7 +35,11 @@ export function uiModes(context) {
             .attr('tabindex', -1)
             .attr('class', function(mode) { return mode.id + ' add-button col4'; })
             .on('click.mode-buttons', function(mode) {
-                if (mode.id === context.mode().id) {
+                // When drawing, ignore accidental clicks on mode buttons - #4042
+                var currMode = context.mode().id;
+                if (currMode.match(/^draw/) !== null) return;
+
+                if (mode.id === currMode) {
                     context.enter(modeBrowse(context));
                 } else {
                     context.enter(mode);