title: Intellij Cannot resolve symbol on import
body: <p>This problem happens intermittently for different libraries and different projects.
  When trying to import a library, the package will be recognized, but the class name can't be resolved.</p>
  <p>If on the import statement, I <code>right-click -&gt; Goto -&gt; the package's declaration</code>, I see all the decompiled classes displayed in the side pane -- Including the ones I need --
  If I try to auto-complete the import statement, I notice the class I need is not featured in the dropdown.</p>
  <p>I tried invalidating caches already, doesn't work. I cannot find any class conflicts -- there is no other jar file in my classpath with the same package name.
  I am able to import this class into other projects.</p>
  <p>Please see screen shots:</p>
  <p><a href="https://i.stack.imgur.com/WwQ5f.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WwQ5fl.png" alt="" /></a></p>
  <p><a href="https://i.stack.imgur.com/6OXn2.png" rel="noreferrer"><img src="https://i.stack.imgur.com/6OXn2l.png" alt="" /></a></p>
  <p>Anyone have a clue?</p>