Thanks for your response. In my case I am scanning a service on my ibeacon, and I am randomly not having didDiscover callback. I noticed that the success rate dropped since iOS 18 release. As I understand, the ADV_IND of an ibeacon is almost reserved, so I guess scanning my service is an active scan. Did major iOS updates add more restrictions for active scan in background ?

for me it does not disappear, but when I replace my [String] with NSArray, then when using it, cast with as? [String]it works fine