Creating PixelHeads Pet Shop World Crashes MineCraft v1.9.0 on iOS

After purchasing and downloading the PixelHeads "Pet Shop" Skins/World Pack on an Apple iPad Mini (Model: ME840B/A), trying to "Play"/"Create New"/"Pet Shop"/"Create" crashes Minecraft causing it to return to the iOS Home Screen.

The "Generating World" screen appears but the progress bar never starts progressing and eventually there is a short noise and Minecraft exits out back to the iPad Mini home screen.

After relaunching Minecraft and returning to "Play", a new Pet Shop World entry is listed which can then be launched without any issues. The issue is fully repeatable.

The same pack works perfectly on the Nintendo Switch.