The first menu item in the context menu for photos in Survey view is Remove From Selection. In English, it correctly shows / as the keyboard shortcut. But in German, Spanish, French, Italian, Portuguese, and Swedish the shortcut is different, even though the menu shows it as /. For example:
Updates to the Adobe Photography Products were released on June 13. The update contains a fix for this issue.Please download and the latest version of your application via the Adobe Creative Cloud Application or your respective device app store.
If you do not see the update (Mac and Win) you can refresh your Creative Cloud App with the keyboard shortcut [Ctrl/Cmd]+[Alt/Opt]+[ R ].
Note: App store availability can take several days for the update to appear and be available.