Shortcodes of subpages do not refer to the correct subpage.

I have a page with several subpages:
```
main.md
- sub1.md
- sub2.md
- sub3.md
```
Each subpage contains a shortcode block with unique content, let's say something like
`[section name='text']subpage_1[/section]` with the counter increasing for each subpage.

Now loop over the subpages in the main page and dump the shortcodes (as mentioned in the documentation https://learn.getgrav.org/16/content/content-pages#contentmeta):
```
{% for p in page.collection %}
{{ dump(p) }}
{{ dump(p.contentMeta.shortcodeMeta.shortcode.section.text) }}
{% endfor %}
```
I would expect `p.contentMeta.shortcodeMeta.shortcode.section.text` to always point to the subpage's [text]-element. However it doesn't seem to be the case. It's always refering to the first one, while the "raw_content" property however shows the expected values.

Am I doing it wrong or is this some problem with the shortcodes?