Ahhhh, got it (i think…).
If someone will experience this (and don’t understand it, like me):
First and foremost: It has nothing to do with original or extended waveforms.
Some of the waveforms (original and extended as well) are just exclusively working when updated by trigger or hold, so to speak. It makes totally sense nothing will happen when using these on another track (if this track hasn’t any triggers on it)… “in free the LFO will never retrig. It will then continue to run regardless if new notes are triggered” (page 32, manual) → that’s why triangle f.e. doesn’t need a trigger to run (and move a parameter on other tracks as well.) but using linear decay f.e.: trigger or hold won’t work if not having trigs on the track - and in free in will run forever, but it won’t start over and cyle like a triangle f.e… So it is an envelope and not a LFO actually.
You can see this in the manual on page 33. LIN, ILIN, EXP and IEXP won’t start over when there’s no trigger. Some of the extended waveforms behave accordingly.
Maybe i’m slow, yes haha, but it would have been nice if the (official elektron) manual would have made it clear, that some of the waveforms of the LFO are just NOT LFOs - but envelopes. (Even if this is partially somehow self explanatory because in case of the linear decay you’ll get a saw - which is already there. But still. This is not the case with the exponential, too).