App crashed when changed to landscape view and back on start screen

Expected behavior

The app shouldn't crash when changed to landscape Mode and back to portrait

Actual behavior

When I clicked on the start screen tab under settings, I had to rotate the screen to landscape and back to portrait and it crashed then displayed the start page.

How to reproduce

• set screen to auto rotate
• Launch Web Opac
• click on settings
• click on start screen
• Rotate the screen of the mobile device to landscape and back to portrait
• There goes the bug

• version 5.3.1
• Browser: chrome
• Operating System 5.1

Infinix- X551

Recording of the Bug