Rohos Logon: U2F - Multiple Accounts with one physical U2F-Device

I use Rohos Logon to provide a 2nd-Factor-Authentication to W10 using a USB based U2F-Device (Yubico 5). This works well and without problems for a any single Useraccount.
Unfortunally, when I do register a further account with the same U2F-Device, I cannot use the U2F-Device for the previous registered account anymore. (Background: Depending the the task, I use different useraccounts, but have only one U2F Device). After confirming the U2F device by touching the button, I get always logged in as the last username which has been registered with Rohos Logon, but not any previous registered account. In the GUI unter "Users and Keys" both users are listed with different Key-ID's (which is expected by the U2F-Protocol)
Which steps are required, to ensure that one U2F-Device can be used with different Useraccounts?