No info while debugging with RTOS2 5.5.1

I have a project for an STM32L4.
Today I updated the CMSIS RTOS2 Keil RTX5 from version 5.4.0 to 5.5.1.

If I debug in Keil with the old RTX5 version (5.4.0) I can see all stack and variable in the window "Call Stack + Locals". If I use the RTX5 latest version (5.5.1) I see only the idle and timer threads; no other threads, no call stack and no variable values.

Does anyone have the same problem?
How can I fix?

Thanks,
Antonio