Public UI text elements set in Inspector get stripped on iOS builds.

Steps to reproduce:
1) Open the attached project.
2) Build for iOS.
3) Run on a device.

Observe the exception in Xcode console:
NullReferenceException: A null value was found where an object instance was required.
at Search_Hotel..ctor () [0x00000] in <filename unknown>:0

When using Mono2x, it crashes in:
EDTPlanner`m_wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr at mscorlib.dll.s:354324

This reproduces with code stripping disabled as well. There is a link.xml in the project, which preserves UntiyEngine.UI.Text, but that doesn't help with the issue.

Reproduced on:
2017.1.0a1, 2017.1.0b7, 5.6.1p1

Device tested:
iPhone 7 Plus iOS 10.3.2