<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto">Run this:</p>
<div class="highlight highlight-source-dart notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="import 'package:flutter/material.dart';

void main() =&gt; runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() =&gt; _MyAppState();
}

class _MyAppState extends State&lt;MyApp&gt; {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Container(
            width: 200,
            height: 200,
            decoration: BoxDecoration(
              color: Colors.blue,
              border: Border.all(
                color: Colors.white,
              ),
            ),
          ),
        ),
      ),
    );
  }
}"><pre class="notranslate"><span class="pl-k">import</span> <span class="pl-s">'package:flutter/material.dart'</span>;

<span class="pl-k">void</span> <span class="pl-en">main</span>() <span class="pl-k">=&gt;</span> <span class="pl-en">runApp</span>(<span class="pl-c1">MyApp</span>());

<span class="pl-k">class</span> <span class="pl-c1">MyApp</span> <span class="pl-k">extends</span> <span class="pl-c1">StatefulWidget</span> {
  <span class="pl-k">@override</span>
  <span class="pl-c1">_MyAppState</span> <span class="pl-en">createState</span>() <span class="pl-k">=&gt;</span> <span class="pl-c1">_MyAppState</span>();
}

<span class="pl-k">class</span> <span class="pl-c1">_MyAppState</span> <span class="pl-k">extends</span> <span class="pl-c1">State</span>&lt;<span class="pl-c1">MyApp</span>&gt; {
  <span class="pl-k">@override</span>
  <span class="pl-c1">Widget</span> <span class="pl-en">build</span>(<span class="pl-c1">BuildContext</span> context) {
    <span class="pl-k">return</span> <span class="pl-c1">MaterialApp</span>(
      home<span class="pl-k">:</span> <span class="pl-c1">Scaffold</span>(
        body<span class="pl-k">:</span> <span class="pl-c1">Center</span>(
          child<span class="pl-k">:</span> <span class="pl-c1">Container</span>(
            width<span class="pl-k">:</span> <span class="pl-c1">200</span>,
            height<span class="pl-k">:</span> <span class="pl-c1">200</span>,
            decoration<span class="pl-k">:</span> <span class="pl-c1">BoxDecoration</span>(
              color<span class="pl-k">:</span> <span class="pl-c1">Colors</span>.blue,
              border<span class="pl-k">:</span> <span class="pl-c1">Border</span>.<span class="pl-en">all</span>(
                color<span class="pl-k">:</span> <span class="pl-c1">Colors</span>.white,
              ),
            ),
          ),
        ),
      ),
    );
  }
}</pre></div>
<p dir="auto">I'd expect to see a blue box with a simple white border, but there is actually a very slight blue line outside of the white border. I haven't seen it in previous versions of flutter, but then again I haven't looked for it specifically. I'd guess this is something to do with anti-aliasing in the engine.</p>
<p dir="auto">This is what it looks like in a screenshot (and FYI I've tested in release mode and it does the same thing, not that I'd really expect it to be different).</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/3103484/49551197-35c10500-f8a3-11e8-870a-3b13a8713583.png"><img src="https://user-images.githubusercontent.com/3103484/49551197-35c10500-f8a3-11e8-870a-3b13a8713583.png" alt="screenshot_20181205-152229" style="max-width: 100%;"></a></p>
<p dir="auto">And blown up:</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/3103484/49551274-7b7dcd80-f8a3-11e8-955a-38984bd54b26.png"><img src="https://user-images.githubusercontent.com/3103484/49551274-7b7dcd80-f8a3-11e8-955a-38984bd54b26.png" alt="screenshot_20181205-152229_blownup" style="max-width: 100%;"></a></p>
<h2 dir="auto">Logs</h2>
<p dir="auto">N/A</p>
<h2 dir="auto">Flutter Doctor</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[√] Flutter (Channel dev, v1.0.0, on Microsoft Windows [Version 10.0.17134.407], locale en-GB)
[√] Android toolchain - develop for Android devices (Android SDK 28.0.3)
[√] Android Studio (version 3.2)
[√] IntelliJ IDEA Community Edition (version 2018.2)
[√] IntelliJ IDEA Community Edition (version 2018.3)
[√] VS Code (version 1.27.2)
[√] VS Code, 32-bit edition
[√] Connected device (1 available)

• No issues found!"><pre class="notranslate"><code class="notranslate">[√] Flutter (Channel dev, v1.0.0, on Microsoft Windows [Version 10.0.17134.407], locale en-GB)
[√] Android toolchain - develop for Android devices (Android SDK 28.0.3)
[√] Android Studio (version 3.2)
[√] IntelliJ IDEA Community Edition (version 2018.2)
[√] IntelliJ IDEA Community Edition (version 2018.3)
[√] VS Code (version 1.27.2)
[√] VS Code, 32-bit edition
[√] Connected device (1 available)

• No issues found!
</code></pre></div>
<p dir="auto">This is running on a Nexus 5x running 8.1.0 on the Nov 5 2018 security patch.</p>
<p dir="auto">I create a plugin by following the documentation :</p>
<div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="flutter create --org com.example --template=plugin hello
cd hello/example; flutter build ios --no-codesign
open ios/Runner.xcworkspace"><pre class="notranslate">flutter create --org com.example --template=plugin hello
<span class="pl-c1">cd</span> hello/example<span class="pl-k">;</span> flutter build ios --no-codesign
open ios/Runner.xcworkspace</pre></div>
<p dir="auto">The documentation says that the development files can be found under this folder in the Xcode project navigator:<br>
<strong><code class="notranslate">Pods/Development Pods/hello/Classes/</code></strong></p>
<p dir="auto">But in fact, the project navigator puts them under:<br>
<strong><code class="notranslate">Pods/Development Pods/hello/../../example/ios/.symlinks/plugins/hello/ios/Classes</code></strong></p>
<p dir="auto">Note: the files are physically at the right location <code class="notranslate">hello/ios/Classes/</code>, so I guess it's only a symlink issue.</p>
<p dir="auto">My environment:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Flutter 0.5.1 • channel beta • https://github.com/flutter/flutter.git
Framework • revision c7ea3ca377 (7 weeks ago) • 2018-05-29 21:07:33 +0200
Engine • revision 1ed25ca7b7
Tools • Dart 2.0.0-dev.58.0.flutter-f981f09760"><pre class="notranslate"><code class="notranslate">Flutter 0.5.1 • channel beta • https://github.com/flutter/flutter.git
Framework • revision c7ea3ca377 (7 weeks ago) • 2018-05-29 21:07:33 +0200
Engine • revision 1ed25ca7b7
Tools • Dart 2.0.0-dev.58.0.flutter-f981f09760
</code></pre></div>