[8.60] rare runes not spawning error

[benben10]

runes stopped spawning just here in the center. happened not long before the 27:00 min mark i think this was in some HB game with a high start. bouties were around 1k already.
first and so far last time i have ever seen this happen so maybe just some weird error. i cant remember if this was on a ghostbot, if that might cause more errors.

here is the screenshot. just some wierd little green swirls that i couldnt select or anything