Why does the type of ribbon appear to be not subject to the “lifetime” module like other types of particles? And if there is no way to manage the “lifetime” module how to bypass to create an “infinite” ribbon otherwise ?
Its a bug/limitation of ribbons since it allocated the amount of verts needed on spawn, with an infinite lifetime it only gets the max amount of the trail count which generally is 50 I think.
The problem is, if you increase this number to something really high it can crash or at least extremely slow down your computer.
So its not wise to use infinite ribbons, but just give them a long trail and quite a high max trail count. (watch out with values higher than a few 1000)
Edit: also doesnt work, so my best suggestion atm is to give them a rather long lifetime but do fade them out after that longer lifetime. performance and all.