I'm submitting a ...
[X ] feature request

Current behavior
When rendering a child component inside a modal, the elements are not rendered until the modal is opened. This means that calling the jquery initializer methods for semantic ui do not work in ngoninit etc. Instead you have to find an alternative way to call these after you are sure the modal has been shown the first time, such as :

this.ngxSmartModalService.getModal('xxxxx').open();   

if (this.isFirstModalShow) {
      this.isFirstMainShow = false;
      setTimeout(() => {
        this.childComponentInitSemanticUiElements();
      });
}

Note: The problem doesn't have anything specific to semantic ui, it's for anything where you want to access the dom elements from jquery.

Expected behavior
Just like there are events that fire after the modal has been closed, it would be practical to have events like "onOpened" and "onFinishedRendering" where you know the DOM elements are available.