You cannot edit a streaming playback, I think it has never been possible neither today with V2.0.2.0 or with 1.8.2. No, it's not a bug.
Maybe I did not say it clear enough:
If I want to import an audio track, I click on the track Manager, I click on the import File then the edit window appears where I enter the category (e.g. music) the type of track (music), Genre, Details, sweepers, Title, artists, image, comments, insert events at the start and stop of playback, select the audio file and many other things.
If I want to import a streaming track, I click on the track Manager, I click on the import File then the edit window appears where I enter the category (Radio streams) the type of track (internet stream), Genre, Details, sweepers, Title, artists, image, comments, insert events at the start of playback select the path on the network to connect to and many other things.
In version 2.0.0.6, by double clicking on the playlist, the edit window appears where I can edit the data or edit the sweepers, insert events at the start and in the case of an "internet stream" track, also change the address to connect to.
In version 2.0.2.0, by double clicking in the playlist, the edit window appears where, in the case of an audio file, I can edit data such as version 2.0.0.6 while in the case of an "internet stream" track, the edit window appears regularly but the track disappears from the playlist.