(solved but instructive) bug : reverse & jump on 1 knob (minilab mk2)

[ChrApww]

Eventually, it went back to normal after a restart of Reaper...

Hi, I have a buggy behavior with 1 knob only, and only in 1 mapping of an Arturia MiniLab Mk2. Here are the details :

1. in the MiniLab, I've set 2 memory plans (out of 8 possible), with different CC numbers or notes. The Feedback and Control Transformation for Toggle Mode #1 plan is locked by Arturia, and when I'm using the encoder Add a monotonous behaviour to 'slowly approach if jump to big' #12, it works fine with the ReaLearn mapping I've set for this plan.
2. when I switch to the Source Min/Max in Toggle Mode #2 plan, the exact same knob Add a monotonous behaviour to 'slowly approach if jump to big' #12 goes crazy : reversing the course, jumping from set values to extreme, yet all parameters in ReaLearn are the same than any other knob (no reverse effect,
3. To test that :

• I've attached this knob to a different target : same effect.
• I've set a different CC value into the MiniLab : same effect.
• I've hooked the target to a different knob : works perfectly fine.

So, it looks to me that it may exist a bug in one of the ReaLearn tables when I set this mapping up, but it's not dependent on CC value, neither on the target data.
Of course, with some instructions, I'd be happy to run more tests, export this mapping and pass it on, but being a non-coding (at all) guy, I need to have a good hand to get through ;-)
Many thanks in advance

Here is a screen copy of the buggy mapping