z_level_compensation again

After experiencing issues with other software on my computer, I decided to perform a fresh installation using the current DVD version 2.9.4. (2.9.7 after Upgrade)

Unfortunately, I'm once again encountering problems with Z-Level Compensation.
After creating the “probe_points.txt” file, I can enable “Z-Comp”, but the value in the “Z_Axis Comp” field does not change as expected. Once “Z_COMP” is turned off, it cannot be reactivated without restarting the program.
Do you have any idea what might be causing this?

Thank you very much for your support.
Best regards,
Klaus