In other browsers, things are as normal, but Chrome doesn't seem to format the text with the HTML, but instead show it as the switch between code and formated text-button was used. This causes problem when saving.

Versions:
System: Chrome 92, Windows 10
Files: AdvHTMLEdit.js v2.10, dmxEditor.min.js v3.5.6, jquery v3.6.0

Hello, which version of Advanced HTML Editor are you using exactly?
Do you see the same behavior on our showcases such as: www.dmxzone.com/demo/ahe3/SocialNetwork/index.html ?
Can you post a screenshot or a link to your page?

How do I tell which version I use? I thought the files listed could tell...

Here are three screenshots:
1. The original text: intra.tmforsk.no/images/skjermbilde1.png
2. Opened in editor: intra.tmforsk.no/images/skjermbilde2.png
3. HTML-code mode: intra.tmforsk.no/images/skjermbilde3.png

Probably you are using some really old version of the editor. What does the version in:

ScriptLibrary/dmxEditor.min.js

say?

intra.tmforsk.no/ScriptLibrary/dmxEditor.min.js

Could the implementation be updated in some way?

Ok it's the newest version, wondering what happens in your browser exactly.
Can you confirm the same happens on our demo page(s) like: www.dmxzone.com/demo/ahe3/SocialNetwork/index.html

Nothing happens there.

Nothing happens? You mean the issue cannot be recreated there?

No, and neither can I add text or anything.

Are you sure there isn't some issue with your browser, maybe some plugin doing this? The demo works fine in my browser i can add text and style it an it looks fine, can't really recreate the issue you reported.

The problem is reported on all computers, so there must be something else. But I will try to to update the code that add the editor, and see if it helps.

I reuploaded the Scriptlibrary folder and now it seems to work. Must have been corrupt files.