Unable to nest other component in the component

[rtpm]

Hello Sascha, here's a problem I am facing.

Describe the bug
Can't use other djck components in the component

To Reproduce
Say there are 2 components.
{% icon %} -> Inline
{% icon_with_text %} -> block

The first one is a simple svg code. The second one is a div and text below.
Here's the template for the second one.

@register.tag
@register.tag('end_icon_with_text')
@component_block_tag(get_template("components/icon_with_text.html"))
def icon_with_text():
    return {}

icon_with_text.html (simplified)

{% load my_components_tags %}

<div class="flex flex-col">
  <div>{% icon %}</div>
<div>{% render_slot slots.children %}</div>

Usage:
{% icon_with_text %}Here's the text{% endicon_with_text %}

Getting error:
django.template.exceptions.TemplateSyntaxError: Invalid block tag on line 2: 'icon'. Did you forget to register or load this tag?

Both tags are located in the same python my_components_tags.py file.
There are other block/inline components working without any problems. {% icon %} tag alone also renders without problems.

Using the latest 0.5.1 version of djck.

Thanks, if you need more info let me know.