Handles are missing

[4thex]

Hi,

I am experiencing a problem using Annotorious with Angular. The handles are missing when an annotation is created or selected.
It should render like this:

but it renders like this:

The problem persists until the page reloads. It is hit or miss if it renders correctly or not.
When I inspected the DOM, I can see that circle element with class=""a9s-handle-buffer" and class="a9s-handle-dot" has attribute r="0".
Looking into the "app\node_modules@annotorious\annotorious\src\annotation\editors\Handle.svelte", I can see that r is set to the handleRadius. I am not familiar with Svelte, and I have not tried to debug it yet.
Does anyone have an idea about this. Is it a bug or am I setting it up wrong?