I am the owner of the connector.
It was working fine and didn't make any changes to it only created connections to it and used its actions in a flow.

Click on Edit in the list of connectors, but none of the fields are editable, and the "Update Connector" action is missing.
Can click on Swagger editor, but nothing there is editable either.

The other connectors are editable, and ideally don't want to create a new one because it is used quite extensively in a flow.
Only saw this after publishing the solution via pipelines to the production environment. Where after publishing I need to change some of the settings that do not copy over during deployment.
Back in the development environment, I suddenly can't edit the Connector there either.
Tried removing the items from the solution.
Removed the solutions.
Tried different browsers.
Tried different machines.
Tried different browsers on different machines.