Modals can overlay the logged out page

[dschmidt]

Steps to reproduce

open a modal, be logged out because of session timeout

Expected behavior

Modal is closed and the logged out page is visible and accessible

Actual behavior

Modal is not closed and prevents access to the underlying page

Setup

Please describe how you started the server and provide a list of relevant environment variables or configuration files.

OCIS_XXX=somevalue
OCIS_YYY=somevalue
PROXY_XXX=somevalue

Additional context

Add any other context about the problem here.