It could be that your privacy manifest is in the wrong place. It must be in the root folder of your app bundle. You can check to see whether Xcode is finding the manifest by generating your own privacy report. I originally had mine nested one folder down, and the generated report was empty. When I moved it to the root, the report had the privacy data.

Still happening in 2024: iPhone Xr iOS 17.4.1 Xcode 15.2 ==1907==Unable to find a memory range for dynamic shadow. ==1907==space_size = 0x00006b003fff, largest_gap_found = 0x000066a00000, max_occupied_addr = 0x007000000000, new_max_vm = 0x000335000000 AddressSanitizer: CHECK failed: sanitizer_mac.cpp:1279 "((0 && "cannot place shadow")) != (0)" (0x0, 0x0) (tid=589858) <empty stack> AddressSanitizer report breakpoint hit. Use 'thread info -s' to get extended information about the report. (lldb) thread info -s thread #1: tid = 0x90022, 0x0000000104ee91dc libclang_rt.asan_ios_dynamic.dylib`__asan::AsanDie()

Finally figured it out: in Pricing and Availability, you have to make the app unavailable everywhere. Only then can you remove it.