Cubase 15 pro. Sound disappears when set the focus on editor window

Hello
With Cubase 15 pro, when the music is playing, if I double click on midi event to open the editor, only the sound from the event I double click on will play and all other sounds will stop. This happens when the window with the editor receives the focus. If I put the focus on a window of mix, it is ok, all the sounds are playing well. it is happening only with the editor.
The exact same use case on Cubase 14 pro does not stop all the sounds.
Can you help me?
Regards

Hi and welcome to the forum,

Most probably the Solo in Editor button is enabled.

Look for the icon in the tool bar of the editor.

Thank you very much.
You were right. The solo in Editor was activated.
I don’t use this feature at all and never touched it. It was also hidden in the tool bar. There is also no shortcut for that so I am wondering why it was activated.
Once again, thank you.