title: Why do breakpoints disappear in Spring Tools Suite (Eclipse)?
body: <p>All breakpoints are removed from the debugger each time <code>Maven &gt; Update Project</code> is executed from the project's context menu in Spring Tools Suite (version 4.12.1)? Is it possible to prevent this from happening?</p>
  <p><strong>[EDIT]</strong> Steps to reproduce:</p>
  <ol>
  <li>Using Spring Tools Suite, select <code>File &gt; New &gt; Spring Starter Project</code></li>
  <li>Enter <code>Name: test</code>, <code>Group: com.sample</code>, <code>Artifact: test</code>, <code>Package: com.sample</code>.</li>
  <li>Hit the NEXT button and without modifying anything the FINISH button.</li>
  <li>Open the <code>TestApplication.java</code> class file in the editor and activate a breakpoint on <code>SpringApplication.run(TestApplication.class, args);</code></li>
  <li>From the project's context menu, select <code>Maven &gt; Update Project</code> or hit <code>ALT+F5</code> and press the OK button.</li>
  </ol>
  <p>Result: The previously selected break point disappears while I would expect it to remain activated.</p>