Elektron Musical Instruments

Hello Monofolks, 
 
before I send this report to Elektron I would like to ask the others if
someone has had the some problem:
 
The following only pertains to the MIDI tracks:
 
When copying a page, the 2nd page is OK but on the 3rd and 4th ones only
GREEN lights are shining (instead of RED).
Sometimes just pushing the GREEN trigs switches them to RED and everything
works OK.
But sometimes ALL notes in ALL (midi) TRACKS stop playing and when pushing
the trig key, there is no pitch indicated. It shows "---" instead. Even
after clearing these pages it is not possible to make the tracks playing. 

The same happened when live recording. After recording a few notes to the
third page, all MIDI notes switched to mute (or whatever "---" means).

I have saved the pattern and the kit before the "mute" action appeared so it
is possible to repeat it.
However, I do not know why this happens only to some patterns. 

Do you think this bug could be caused (or rather initiated) by too many
notes in a track?

Thanks for your help

With regards
Martin