Majour Runaan's Hurricane Bug
This bug is a majour nerf to Runaan's Hurricane, and I am going to explain what the passive should be doing first.
Runaan's Hurricane is based on an area around the main target which is ~375 units in a complete circle, the bolts will attack the two nearest enemies by the centre of the circle which is the main target. So very simple to understand and in a lot of case can artificially increase your range by ~375 units because the bolts can extend further.
So here is the big, and there are two majour parts to it:
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Is pretty RNG [Random Number Generated] event where the passive will straight up not work at all OR only half the passive will work (i.e. only one bolt goes off when there are at least 2 other side target within range)
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90%+ of the time the passive only works when WITHIN your basic attack range, and does not work at its maximum range, even worse if you have Rapid Firecannon. Even then it still does not always function correctly.
NOTE: Notice this while playing as Teemo - it did occur the same on Jinx as well - I am sure it is not working correctly on other Hurricane users like Twitch and Kalista as well.