mtx-select style is broken while use bootstrap-grid

[hanogin]

I update to latest version of angular, angular material and this extention and i notice something is off with the stlye of the mtx-select while use bootstrap-grid.css

Im not use the all bootstrap lib, only the css for the grid sysytem
I did a public repo for this, everithing is default, what cause the problem is this line
in earlier version everithing was working fine.
the original select of angular material is working fine.

[nzbin]

This is because the option set appendTo="body" by default, the dropdown-panel's position is absolute.

body {
  position: relative;
}

[hanogin]

thank you!