I'm trying to select elements in ng-content, but seems to work only if the element is on content's root level
root component
<app-wrapper>
<div class="root">Test1</div>
<div>
<div class="sub">Test2</div>
</div>
</app-wrapper>
child component - works as expected
<ng-content select=".root"></ng-content>
child component - no content selected
<ng-content select=".sub"></ng-content>
Yes this is a limitation of content projection.
Only 1st level children are matched for content projection.