iOS development build locks up after seeing splash screen

This is shown using Xcode 9.3 beta. Screen turns a kind of darkish blue color after the splash.

2018-02-13 15:26:51.865931-0800 ureka[1079:668353] [DYMTLInitPlatform] platform initialization successful

2018-02-13 15:26:51.877396-0800 ureka[1079:668247] UnityIAP UnityEarlyTransactionObserver: Created

2018-02-13 15:26:51.877501-0800 ureka[1079:668247] UnityIAP UnityEarlyTransactionObserver: Registered for lifecycle events

2018-02-13 15:26:51.881308-0800 ureka[1079:668247] Built from ‘2018.1/staging’ branch, Version ‘2018.1.0b6 (2c4679632cfb)’, Build type ‘Release’, Scripting Backend ‘il2cpp’

2018-02-13 15:26:51.883714-0800 ureka[1079:668247] → registered mono modules 0x104ea3310

→ applicationDidFinishLaunching()

2018-02-13 15:26:51.956399-0800 ureka[1079:668247] Metal GPU Frame Capture Enabled

2018-02-13 15:26:51.956850-0800 ureka[1079:668247] Metal API Validation Disabled

2018-02-13 15:26:52.028779-0800 ureka[1079:668247] UnityIAP UnityEarlyTransactionObserver: Added to the payment queue

→ applicationDidBecomeActive()

GfxDevice: creating device client; threaded=1

Initializing Metal device caps: Apple A10 GPU

Initialize engine version: 2018.1.0b6 (2c4679632cfb)

2018-02-13 15:26:52.698288-0800 ureka[1079:668401] TIC Read Status [1:0x0]: 1:57

2018-02-13 15:26:52.698312-0800 ureka[1079:668401] TIC Read Status [1:0x0]: 1:57

Setting up 1 worker threads for Enlighten.

Thread → id: 16e4e7000 → priority: 1

UnloadTime: 2.892958 ms

2018-02-13 15:27:07.259545-0800 ureka[1079:668247] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles

2018-02-13 15:27:07.260321-0800 ureka[1079:668247] [MC] Reading from public effective user settings.

2018-02-13 15:27:07.828092-0800 ureka[1079:668401] TIC Read Status [4:0x0]: 1:57

2018-02-13 15:27:07.828209-0800 ureka[1079:668401] TIC Read Status [4:0x0]: 1:57

2018-02-13 15:27:07.841362-0800 ureka[1079:668356] TIC Read Status [5:0x0]: 1:57

2018-02-13 15:27:07.841450-0800 ureka[1079:668356] TIC Read Status [5:0x0]: 1:57

Does your first scene take long to load?
This issue could be related to one known bug, but just in case, could you report a bug for this so we can check?

Usually takes less than a second for the first scene to load.