# login to Admin Console
# go to {nav Configuration > Website > Advanced} section
# uncheck `Enable SEO-friendly URLs mode (MOD-REWRITE)` checkbox and save changes
# go to {nav Configuration > Website > Regional} section
# ensure that at least 2 enabled languages are present and `English` language is set as primary
# go to {nav Configuration > Website > Themes} section
# ensure, that `advanced` and `default` themes are enabled and `advanced` theme is set as primary
# go to Front-End by removing `/admin/....` part from url (important not to have `index.php` in resulting url)
# confirm, that `English` language and `advanced` theme were used
# click on `Home` icon in top menu
# confirm, that URL ends up with `?env=-index:m0-1-X-Y-s-` where:
* `X` matches ID of `English` language
* `Y` matches ID of `advanced` theme
# change `X` in above URL to match ID of any other enabled language
# confirm, that specified language was used instead of primary one
# change `Y` in above URL to match ID of any other enabled theme
# confirm, that specified theme was used instead of primary one