Incorrect mapping of MIDI controllers to mixer faders

[CodyMarkix]

System Information

Windows 11, M-Audio Oxygen 61 MKV MIDI controller

LMMS Version(s)

1.3.0-alpha.1.884+a809c03

Most Recent Working Version

1.2.2

Bug Summary

When mapping a MIDI controller to a mixer fader, movements of the controller aren't translated correctly, with spikes of movement in lower values, 0.0 dB being in the middle and little to no movement above 0.0 dB. This only happens with mixer faders, too. Parameters in other locations translate incoming MIDI values correctly. Below are two videos attached showing this behavior.

Expected Behaviour

MIDI values should be correctly translated to mixer volume without jitter/sudden jumps.

Steps To Reproduce

1. Have a MIDI controller
2. Create a new LMMS project
3. Either use the master channel or add a new mixer channel
4. Map the MIDI controller to a mixer channel
5. Try to adjust the volume of the channel

Logs

Click to expand

Screenshots / Minimum Reproducible Project

• Video showcasing the issue: https://imgur.com/a/Qf8Dgm4
• Video showing a non-mixer fader working correctly: https://imgur.com/a/TYCUJ9w

Please search the issue tracker for existing bug reports before submitting your own.

• [x] I have searched all existing issues and confirmed that this is not a duplicate.