title: IntelliJ - problems view doesn't show any compile errors but underlines classes
body: <p>IntelliJ Problems view does not show compile errors, even it underlines the classes in project view.</p>
  <p>I've already tried many solution found (eg <a href="https://stackoverflow.com/a/46777445/1386911">here</a>), switched to Eclipse compiler, but nothing solved the problem.</p>
  <p><a href="https://i.stack.imgur.com/hFfDA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hFfDA.png" alt="enter image description here" /></a></p>
  <p>Version: 2021.2.3 (Community Edition)Build #IC-212.5457.46 built on October 12, 2021</p>