wrong editor focus after double click on a none qml file

1. open a project with qml files
2. open some none qml file in the editor
3. copy something to clipboard
4. open a qml file
5. go inside design mode
6. use open files in sidebar to switch back to the none qml file
7. try to insert something here

result is that it pastes the clipboard to the last in design mode opened file

expected it should paste the clipboard to the blinking cursor which shows the focus to the none qml file