Ok so since we've got that confirmed, I'll try to fix it.
During this fiber bug, best way is to get a knife and go find wild fiber stalks. 20 fibers per plant.
Sometimes it works and sometimes it doesn't.
Next time show some logs and screenshots, because I haven't seen any of those kind Fiber plants on wasteland.
Consult wiki. Pic is here: http://www.fonline-reloaded.net/wiki/index.php?title=Fibers