You need to pull down the status bar to see which app is recording or casting the screen. You also need to do that to end the screen recording.
Image Credit – Android Authority
You will also be able to stop the screen recording or casting session from these new chips. Also, you will have a unified dialog that opens when a third-party app requests to record or cast the screen. After you grant permissions, a different status bar chip will appear, differentiated from when the SystemUI is recording or casting. These updates are likely to come in the upcoming Android 15 QPR1 release or later.
In my opinion, the potential updates in Android 15 for screen recording are a welcome change, making it much easier to see and control recordings directly from the status bar. The new chips showing recording duration and allowing quick access to stop sessions are small but thoughtful improvements that could make a big difference.