Does updating the iOS 15 Sequoia version affect traktor pro version 3.11.1.17?
Native Instruments have already made a statement regarding macOS 15. Read it here:
https://support.native-instruments.com/hc/en-us/articles/360014900358-Compatibility-of-Native-Instruments-Products-on-macOS
Short answer: NI do not recommend updating to macOS 15 at this time.