I have exactly the same issue. Did you find a workaround?
[Update]
I just find out that JUCE_PUSH_NOTIFICATIONS_ACTIVITY is defined to something really weird in CMakeList.txt.
Any idea about possible cause?
add_definitions("-DJUCE_ANDROID=1" “-DJUCE_ANDROID_API_VERSION=16” “-DJUCE_PUSH_NOTIFICATIONS=1” “-DJUCE_PUSH_NOTIFICATIONS_ACTIVITY=“潣⽭潲楬樯捵⽥畊散捁楴楶祴�ɭ”” “-DJUCER_ANDROIDSTUDIO_7F0E4A25=1” “-DJUCE_APP_VERSION=1.2.054” “-DJUCE_APP_VERSION_HEX=0x10236”)