Midi control controlling faders on multiple pages at once ?

[pgScorpio]

QLC+ v 4.12.2, Windows 10

Very strange problem with midi controls changing multiple faders at once....

Scenario:
Multi page frame.
On one page I have faders controlling the level of a single channel.
On another page I have faders controlling playback of a scene.
All pages and faders are controlled by a nanoKontrol2.
So far all working OK.

Then I did set the "Value Range" of some level faders to 0..134, and switched back to operate mode again. Now when controlling the changed level faders by midi this also changes a scene fader on another page ! (Watch the monitor!)
Controlling the level fader by mouse does not affect the scene fader and also controlling the scene fader does not seem to affect the level fader.

And now it becomes even stranger....
After closing and re-opening it all seemed to be ok again.... Until I switched to design mode and back to operate (nothing else done in between) and the problem was back again.

Attached a minimal workspace that reproduces the problem (just using two faders, generic RGBW fixtures and a scene. Note that sometimes it needs more times switching between design and operate).

P.S.: This problem does not seem to occur until you have changed the "Value Range" of the level fader, changing it back to 0..255 sometimes solves the problem, but not always. (only when not yet saved and re-opened?)