Image attachments break nolink

Device: PC
Browser: FireFox
OS: Win11

Steps to reproduce:
- Create new post
- Add text to post
- Add an image attachment to post
- Add further text
- Add a second image attachment
- Add more text
- Select entire post in full editor
- Hit nolink button
- Submit and look at post

Anything else to add:
Nolink doesn't actually work and key words will still link to items/db entries. Additionally, the final [/nolink] tag will be printed out as text at the end, rather than recognized as the closing tag.
To circumvent this atm, each block of text needs to be individually wrapped in the nolink tags as they seemingly cannot span across the attachments.

They can't span across many things - not just attachments - they need to be wrapped around individual words/phrases that would be otherwise auto-linked.