unexpected behavior with side-panel-handler

[never-give-up-dev]

I had create a side-panel-handler-override where I planned to hide the sidebarContainer in createContainer() present in side-panel-handler.ts method (this contains the left file, search,git, extension ,setting ) in left and in right plugins

Now in the custom class I have override the createContainer() as

const boxPane = super.createContainer();
let layout = boxPane.layout as BoxLayout;
layout.removeWidget(layout.widget.slice[0]);

so there removes the same box , it is success fully removed but when I do cmd+shift+e then the file explorer is opening on right

Can someone help me out who to overcome this problem opening it on the left side, I can provide u more details let me know