ERR joinToString

KOTLIN 1.3.10 and 1.3.11
Android studio 3.3

List.joinToString(“,”,“'”,“,”)
in past result → ‘item’,‘item2’,‘item3’
now is ‘item,item2,item3’
P.S.: ignoring nested prefix and sufix

Nothing has changed in that regard in the last versions.
You can try your example with different versions of Kotlin compiler in play.kotlinlang.org.