Same issue Xcode 16.1 and in Xcode 16.2.0-Beta.3 too

Several years after this bug and storyboards/xibs still can't load named colors from another bundle..

Hello. Is there any news? The same issue with iOS 15.2

Looks like I found the reason. If use 1 name for all phone numbers everything will be fine, 1 million numbers will be added in about 100 seconds. If use about 100 names - about 140 seconds. If use unique names for all numbers - from 270 to 1800 seconds. Hope Apple fixes it.