Screensize MusicLife app too small, ref#82

This issue is very rare and hard to reproduce, below are the global steps.

Scenario
Perform the following steps:

  1. switch on Arcam SA30 version 1.25.4 is used
  2. start Arcam Music Life iOS app, build 3032 is used
  3. close the iPad cover
  4. open iPad cover
  5. tab MusicLife app

Actual result
The size of the MusicLife app is smaller than the maximum possible iPad screen size, refer to screenshots below:

Expected result
The size of the MusicLife app should fit the maximum possible iPad screen size.