Android Navigation Bar gets turned completely white

[ghost]

Steps to reproduce

1. Have a Nextbit Robin with the latest stock software
2. Use Nextcloud from F-Droid

Expected behaviour

• Tell us what should happen
  For the navigation bar at the bottom to not be white so I can see the icons on it.

Actual behaviour

• Tell us what happens
  Navigation bar is completely white.

Can you reproduce this problem on https://try.nextcloud.com?

• Please create a test demo account and see if this still happens there.
• If yes, please open up a bug report
• If not, please verify server setup and ask for help on forum

Environment data

Android version: 7.1.1

Device model: Nextbit Robin

Stock or customized system: Stock

Nextcloud app version: 3.15.1

Nextcloud server version: Irrelevant

Reverse proxy: No

Logs

Web server error log

Insert your webserver log here

Nextcloud log (data/nextcloud.log)

Insert your Nextcloud log here

NOTE: Be super sure to remove sensitive data like passwords, note that everybody can look here! You can use the Issue Template application to prefill some of the required information: https://apps.nextcloud.com/apps/issuetemplate

[szaimen]

Duplicate of #7736