title: Intellij Idea shows files from nested git repositories as "add new" even when the directoriues are ignored in .gitignore
body: <p>I have a directory A with child directories B and C.</p>
  <p>All 3 of them are separate git repositories.</p>
  <p>In order to avoid confusion, I have added B/ and C/ to A/.gitignore</p>
  <p>When i run <code>git status </code> I can only see changes from directory A.</p>
  <p>But, when I try to see the changes via Intellij Idea - it also shows all the files under directories B and C as &quot;add new&quot; files.</p>
  <p><a href="https://i.stack.imgur.com/8m6CE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8m6CE.png" alt="printscreen of Intellij Idea" /></a></p>
  <p>How can I avoid it?</p>
  <p><em>git - 2.19.1.windows.1<br>
  Intellij Idea - 2021.1.2</em></p>