Lib doesn't allow to add any other custom views to map

[gerchicov-bp]

https://github.com/okhanokbay/MapViewPlus/blob/72a7f331e42d539eef0b3b40016e2f8400d495e4/MapViewPlus/Classes/Source/MapViewPlus.swift

guard subview is CalloutAndAnchorView else { return }

You should replace return with continue otherwise it sometimes doesn't deselect the annotation views if sees any other type of subviews.

P.S. Decided to rewrite your library because 50% of it meet our customer requirements only. Starting with removing of protocols with extra obligated methods.