<h3 dir="auto">Version</h3>
<p dir="auto">2.6.11</p>
<h3 dir="auto">Reproduction link</h3>
<p dir="auto"><a href="https://jsfiddle.net/rdjjpc7a/2080/" rel="nofollow">https://jsfiddle.net/rdjjpc7a/2080/</a><br>
The Link to minimal reproduction was forged by me,  please take some time to read my description.</p>
<h3 dir="auto">Steps to reproduce</h3>
<p dir="auto">The premise is that you have an iPhone with the system version IOS9.<br>
The Steps to reproduce seem to be a nested amount of custom components.</p>
<p dir="auto">The problem happened in 2.6.x. I had discovered this problem a year ago. Since I couldn't provide a minimal reproduction at the time (and it is now), I have been rolling back to 2.5.x until now.</p>
<p dir="auto">But I now find the source of the problem in the source code.<br>
<a href="https://github.com/vuejs/vue/blob/v2.6.11/src/platforms/web/runtime/modules/events.js#L69">https://github.com/vuejs/vue/blob/v2.6.11/src/platforms/web/runtime/modules/events.js#L69</a>.</p>
<p dir="auto">In IOS9, Condition "e.timeStamp &gt;= attachedTimestamp" is never holds.</p>
<div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="console.log(e.timeStamp, attachedTimestamp); // In IOS9, eg: 1585822331076 1585824221635"><pre class="notranslate"><span class="pl-smi">console</span><span class="pl-kos">.</span><span class="pl-en">log</span><span class="pl-kos">(</span><span class="pl-s1">e</span><span class="pl-kos">.</span><span class="pl-c1">timeStamp</span><span class="pl-kos">,</span> <span class="pl-s1">attachedTimestamp</span><span class="pl-kos">)</span><span class="pl-kos">;</span> <span class="pl-c">// In IOS9, eg: 1585822331076 1585824221635</span></pre></div>
<p dir="auto">You can compare 2.5.x to solve this problem.</p>
<h3 dir="auto">What is expected?</h3>
<p dir="auto">touch event trigger</p>
<h3 dir="auto">What is actually happening?</h3>
<p dir="auto">events of the touch series are not triggered</p>
<hr>
<p dir="auto">Only happened in 2.6.x,  only events of the touch series</p>
<h3 dir="auto">Version</h3>
<p dir="auto">2.6.11</p>
<h3 dir="auto">Reproduction link</h3>
<p dir="auto"><a href="https://github.com/chenjiahan/vue-event-bubble-issue">https://github.com/chenjiahan/vue-event-bubble-issue</a></p>
<h3 dir="auto">Steps to reproduce</h3>
<p dir="auto">This is a browser quirk on iOS &lt;= 11.3</p>
<ol dir="auto">
<li>Find an old iOS device. (I reproduced the issue on an iOS 8.4 device)</li>
<li>Binding click events on parent and child elements</li>
<li>Click child element</li>
<li>Event listener for parent element is not firing</li>
</ol>
<h3 dir="auto">What is expected?</h3>
<p dir="auto">Correct event bubbling behavior</p>
<h3 dir="auto">What is actually happening?</h3>
<p dir="auto">Mobile safari has buggy event.timeStamp implementations, the value of event.timestamp is abnormal when the page is first loaded. But event.timestamp will return to normal value after refreshing the page.</p>
<p dir="auto">We receive a lot of <a href="https://github.com/youzan/vant/issues/3015" data-hovercard-type="issue" data-hovercard-url="/youzan/vant/issues/3015/hovercard">feedback from vant users</a>, it is currently observed that the problem may occur on iOS 8.4、10.2、10.3、11.3 (mobile safari and wechat browser)</p>
<p dir="auto">Screenshot:<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/694df336072be1f1652900a1a702748fe99c6abb5a9cc11c19df9f26386a72c9/68747470733a2f2f696d672e797a63646e2e636e2f76616e742f7675652d627562626c652d6c6f672d636f64652e706e67"><img src="https://camo.githubusercontent.com/694df336072be1f1652900a1a702748fe99c6abb5a9cc11c19df9f26386a72c9/68747470733a2f2f696d672e797a63646e2e636e2f76616e742f7675652d627562626c652d6c6f672d636f64652e706e67" alt="" data-canonical-src="https://img.yzcdn.cn/vant/vue-bubble-log-code.png" style="max-width: 100%;"></a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/0ed5f01388d20c9e694085cf4ee8c9990eac23482c20c5d962b1ceed3f07debc/68747470733a2f2f696d672e797a63646e2e636e2f76616e742f7675652d627562626c652d6c6f672d696e666f2e6a706567"><img src="https://camo.githubusercontent.com/0ed5f01388d20c9e694085cf4ee8c9990eac23482c20c5d962b1ceed3f07debc/68747470733a2f2f696d672e797a63646e2e636e2f76616e742f7675652d627562626c652d6c6f672d696e666f2e6a706567" alt="" data-canonical-src="https://img.yzcdn.cn/vant/vue-bubble-log-info.jpeg" style="max-width: 100%;"></a></p>
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