Webix windows few in focus or toFront

Hello i have two webix window ui. There is few different cases but one has button which open another and vise verse. I need to achive behavior that when click on one window it will be on the front of another (focus, move, resize, or reopen) and the same thing with another. For now it happened only few times and then only the first one always on top. Trying to use property toFront: true, but it not fix the case.

https://snippet.webix.com/0egkggp7

Find the issue i have fixed css z-index property. :slightly_smiling_face: [Solved]