When I enter notes using the keyboard, the sound of the note continues to play and does not stop.
Are you on the newest Mac OS (27, aka Golden Gate)? If so, see this thread.
yes,yes!
Has this issue been resolved now??
It’s literally been 2 days since OS 27 was released. You can’t expect a bug to be fully diagnosed, new code written, and then tested before releasing it.
If you can provide more details, such as the model of your MIDI keyboard, and output from an app like MIDI Monitor, as described in the linked thread, that would help the team to fix it.