Bug - On AgentPreferences->SubAction->Update Session will be terminated

[LuBroering]

Environment

• Server OS: Linux
• Browser: edge, Firefox
• Znuny version: 7.0.17 worked on 7.0.16

Expected behavior

For Example:
Action AgentTicketStatusView -> click on the settings button/icon for show columns -> save (doesn't matter if any changes are done) -> redirect to AgentTicketStatusView with changed Columns

Actual behavior

Action AgentTicketStatusView -> click on the settings button/icon for show columns -> save (doesn't matter if any changes are done) -> redirect Login Session invalid

How to reproduce

Steps to reproduce the behavior:
See Actual behavior

Additional information

most likely an unwanted behavior of this commit: Fixed session handling while saving user preferences.

• Tested on 7.0.16 here it works
• Tested with a normal user and an Admin (same behavior)

Screenshots

[rkaldung]

Internal issue 877