Listing Collection Entries by Different Columns A-Z in CP

[helloDanuk]

Describe the bug
When opening a collection in the CP and click on a column-title, CP used to sort all entries based on the values in this particular column (A-Z). Since 2.11.10 when clicking a column-title, CP does nothing.

To Reproduce
Steps to reproduce the behavior:

1. Open a collection in the CP (date or number based)
2. In list-view click on a column title (i.e. Slug, Bereich…)
3. There is no chevron-Icon showing up and the entries are not listed from A-Z by this column.

Expected behavior and Screenshots

Environment details (please complete the following information):

• Statamic Version 2.11.10
• Fresh Install or Upgrade: Both (Fresh install without Addons too!)
• macOS 10.14.4
• Browser: Chrome, Safari
• Web Server: Apache
• PHP Version: 7.2.10
• Addons installed:
  • AssetsOrganized
  • CharField
  • Minify HTML
  • PowerTools
  • SEO Pro
  • Spock