What is your operating system?
What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
Shotcut version 23.05.07
Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)
Basicaly, there is not options to change theme anymore in menu.
In older version it was between Languages and Display Metod were Theme and there Fusion Light and Fusion Dark.
Other thing which changed was displayed in Polish language - now half of menu is in mixture Polish and English. Previous version when marked Polish was „more” Polish then English.
For user not using English could be a drama with operating program.