Employee login - For multiple login system throws "Invalid URL" Message on second browser

Replication steps :

Company - City of lakeworth
Employee having onboard tours.

1)Login with Employee on one browser(Chrome)
2)Login with Employee on second browser(Firefox)
3)Observe that system shows pop of "Old session terminated" on firefox browser.
4)On chrome browser, after click on start tour system shows "bad request - invalid URL" on screen

Note :
This issue occurs when employee is having on-board tours.
PFA :

Actual Result :
Ideally for multiple login after session terminates, after logout system must redirect to login page again.