Opening Webstorm from terminal does not work properly after upgrading to 2017.2.5

I've noticed that after installing v2017.2.5 I can no longer open multiple instances of Webstorm from my OS terminal. Before I could easily `cd` to some project and type `websorm .` and project opened in a new Webstorm window. But since 2017.2.5 this is no longer the case. If I open one project and I want to open another one with `webstorm .` command I get redirected to the project which is already opened. Even if I close current project and try executing command again it just shows the entry window to select which project I would like to choose. Removing .idea files did't help.

Any advice or explanation is more than welcomed.