what version of SonarCFamily C/C++ analyzer do you have installed? Could you please make sure you have version 6.4? In version 6.4 we fixed a bug related to complexity and Objective-C: CPP-2252.
Thanks @mpaladin Not sure how to find my SonarCFamily analyzer version.
But from this URL it seems I have 6.4 since I am using 7.9+ on Server.
Sharing what I am aware of:
SonarQube Developer Edition Server 7.9.1
sonarScanner 4.0.0.1744