What type of issue is this?

Incorrect support data (example: BrowserX says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

For Chrome, Edge and Opera, support for the use_dynamic_url option of web_accessible_resources has been added, but the actual implementation of the function has not yet been carried out. So setting the option has no effect. This is misleading and a note should be added that this option has no effect at the moment.
There are 3 tickets at chromium.org on this topic (2 open & 1 duplicate):

• https://issues.chromium.org/issues/324975819 and https://issues.chromium.org/issues/40245983
• https://issues.chromium.org/issues/40151106
  Here they explain that they have yet to implement this feature. They also say here that the plan is to deliver it in Q4 this year.

What browsers does this problem apply to, if applicable?

No response

What did you expect to see?

At lead a note that this setting has no effect at the moment as it is not implemented.

Did you test this? If so, how?

There is an example in the chromium.org ticket https://issues.chromium.org/issues/40245983.

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

Sure:
https://issues.chromium.org/issues/324975819
and the duplicate with an example:
https://issues.chromium.org/issues/40245983
and the main ticket:
https://issues.chromium.org/issues/40151106

Do you have anything more you want to share?

No response

MDN URL

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/web_accessible_resources

MDN metadata