Angular image display?

Question

Angular

Hello.
There is a site written in Angular that accepts data from the WordPress Rest Api.
I'm trying to load a post picture with a table of contents on the page, but for some reason, when the page is loaded, the picture does not display, what could be the problem.
There is an example on the test site HERE
4 lines, because already tried to send requests using different methods
. Here's what you can see in devTools

First site load

When refreshing the page when the pictures are visible

When refreshing the page, when the picture is not visible, it shows only the table of contents

In DevTools, if you add a style display: none;to a picture, then the picture appears. If I add display to style.css then the problem remains