[Mobile] Crash when leaving SketchView before sketch loads

[ghalestrilo]

Nature of issue?

• Found a bug

Details about the bug:

• Web browser and version:

  • Brave 1.5.123 Chromium: 80.0.3987.163 (Official Build) (64-bit)
  • Brave 1.5.123 Chromium: 80.0.3987.119 (Official Build) (32-bit)

• Operating System:

  • ubuntu 19.04 disco
  • Android 9 (Redmi Note 7)

• Steps to reproduce this bug:

  • Access /mobile
  • Press the PlayIcon (triangle, far-right)
  • Quickly press the ExitIcon (cross, far-left)
  • The app should crash