Bug with the Launch of Legacy Client

As we all know, in the updated Client there is an option at login to launch Legacy Client. So you click on it and then it starts to open the Legacy Client. But when I did this it opened multiple versions of the Legacy Client that each one asked, "There is another client running, would you like to cancel it." Then you get the options to either: cancel or Ok. I've pressed each of them many times to get the windows to close and just have one Legacy Client open. But instead, it closes every single running Legacy Client, even the single one that I want open. So my question is: a) How do I fix this? b) Has this happened to anybody else? Thank you to the people who help me solve this.