Could you please go through all the available options in your German Language version to check if all of them only allow 0-100, or do some allow -127 to +127?

The options are:
- Change by
- Fade (per bar)
- Louder (per bar)

I can at times enter negative values for Fade and Louder (see second image, below) but I think these are rejected, and 'Change By' is the only item that can correctly include a negative value. Note that the test for invalid value entry doesn't occur immediately the value is input.

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