[Xposed General] Kevin M:
Two (seemingly not critical) issues on the Galaxy S4 (jfltevzw) running CM12.

XposedBridge.log() is not written to the Xposed log file. It is still written to logcat though. No related error messages seem to be in the logcat.

Random background crashes. In this case Instagram. It could very well be a CM12 or Instagram issue but it is written to the Xposed log. I have no modules installed that modify Instagram.

02-16 23:59:26.332 I/DEBUG ( 8955): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
02-16 23:59:26.332 I/DEBUG ( 8955): Build fingerprint: 'Verizon/jfltevzw/jfltevzw:4.4.2/KOT49H/I545VRUFNK1:user/release-keys'
02-16 23:59:26.332 I/DEBUG ( 8955): Revision: '11'
02-16 23:59:26.332 I/DEBUG ( 8955): ABI: 'arm'
02-16 23:59:26.332 I/DEBUG ( 8955): pid: 25137, tid: 25170, name: IgExecutor #3 >>> com.instagram.android <<<
02-16 23:59:26.332 I/DEBUG ( 8955): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4
02-16 23:59:26.382 I/DEBUG ( 8955): r0 00000000 r1 00000000 r2 b504d200 r3 00000000
02-16 23:59:26.382 I/DEBUG ( 8955): r4 b00ca070 r5 b504d200 r6 a1fff514 r7 ab1ba3a0
02-16 23:59:26.382 I/DEBUG ( 8955): r8 b00ca070 r9 0000002a sl 0000002a fp a1fff498
02-16 23:59:26.382 I/DEBUG ( 8955): ip b4ffca68 sp a1fff450 lr b4f15323 pc b4f15330 cpsr 60070030
02-16 23:59:26.382 I/DEBUG ( 8955):
02-16 23:59:26.382 I/DEBUG ( 8955): backtrace:
02-16 23:59:26.382 I/DEBUG ( 8955): #00 pc 00204330 /system/lib/libart.so (art::eek:atFile::GetOatDexFile(char const*, unsigned int const*, bool) const+727)
02-16 23:59:26.382 I/DEBUG ( 8955): #01 pc 000c1bc3 /system/lib/libart.so (art::ClassLinker::FindOatClass(art::DexFile const&, unsigned short, art::eek:atFile::eek:atClass*)+86)
02-16 23:59:26.382 I/DEBUG ( 8955): #02 pc 000ccbdd /system/lib/libart.so (art::ClassLinker::LoadClass(art::DexFile const&, art::DexFile::ClassDef const&, art::Handle<art::mirror::Class>, art::mirror::ClassLoader*)+324)
02-16 23:59:26.382 I/DEBUG ( 8955): #03 pc 000d1c6f /system/lib/libart.so (art::ClassLinker::DefineClass(char const*, art::Handle<art::mirror::ClassLoader>, art::DexFile const&, art::DexFile::ClassDef const&)+174)
02-16 23:59:26.382 I/DEBUG ( 8955): #04 pc 000d222d /system/lib/libart.so (art::ClassLinker::FindClassInPathClassLoader(art::ScopedObjectAccessAlreadyRunnable&, art::Thread*, char const*, art::Handle<art::mirror::ClassLoader>)+452)
02-16 23:59:26.382 I/DEBUG ( 8955): #05 pc 000d2539 /system/lib/libart.so (_ZN3art11ClassLinker9FindClassEPNS_6ThreadEPKcNS_6HandleINS_6mirror11ClassLoaderEEE.part.401+376)
02-16 23:59:26.392 I/DEBUG ( 8955): #06 pc 000d51a7 /system/lib/libart.so (art::ClassLinker::ResolveType(art::DexFile const&, unsigned short, art::Handle<art::mirror::DexCache>, art::Handle<art::mirror::ClassLoader>)+122)
02-16 23:59:26.392 I/DEBUG ( 8955): #07 pc 00071b43 /system/lib/libart.so (_ZN3art11ClassLinker11ResolveTypeEtPNS_6mirror9ArtMethodE.part.115+106)
02-16 23:59:26.392 I/DEBUG ( 8955): #08 pc 00272f97 /system/lib/libart.so (artAllocObjectFromCodeRosAlloc+306)
02-16 23:59:26.392 I/DEBUG ( 8955): #09 pc 000a34ab /system/lib/libart.so (art_quick_alloc_object_rosalloc+10)
02-16 23:59:26.392 I/DEBUG ( 8955): #10 pc 00384465 /data/dalvik-cache/arm/data@app@com.instagram.android-1@base.apk@classes.dex
02-16 23:59:27.163 I/DEBUG ( 8955):
02-16 23:59:27.163 I/DEBUG ( 8955): Tombstone written to: /data/tombstones/tombstone_07

The build fingerprint is definitely incorrect assuming it reflects my device. It is a VZW S4 but it's not 4.4.2 and that is not my baseband. I'll update this post if the issue evolves over time which could indicate a problem with CM or Instagram not Xposed.