sidebar should not cover the other elements (z-index) in push and slide mode

[RezaRahmati]

Steps to Reproduce:

1. Open this https://codesandbox.io/s/filtering-devextreme-data-grid-6zs9y?fontsize=14
2. click on "Invoice Number" header filter icon

Results You Received:

filter panels opens in wrong position

Results You Expected:

filter panel opens in correct position

Note:

I solved the issue in my app by adding these to styles

::ng-deep .ng-sidebar.ng-sidebar--opened.ng-sidebar--push,
::ng-deep .ng-sidebar.ng-sidebar--opened.ng-sidebar--slide {
  z-index: 1;
}

[RezaRahmati]

I am not sure if that changes is correct, because it was correct if the mode was "over", so that changes only needed for push and slide

[arkon]

There's basically no winning since I'll never know what the sites that are using the component are like.

Regardless, users are free to override the z-index like the workaround you provided as well.

[RezaRahmati]

@arkon I tried to create a branch and do pull request but I got access denied. I would suggest the below code

    .ng-sidebar {
      -webkit-overflow-scrolling: touch;
      overflow: auto;
      pointer-events: auto;
      position: absolute;
      touch-action: auto;
      will-change: initial;
      z-index: 1;
    }

    .ng-sidebar.ng-sidebar--over {
      z-index: 99999999;
    }