Problem with table's z-index

[Ser-Custodio]

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[ ] feature request
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Current behavior

I have a custom dropdown. When I open the dropdown the options are displayed behind the table.

Expected behavior

The opened dropdown should be over the table.

Reproduction of the problem

1. Create a custom dropdown (input of type select) with a few options.
2. Put a ngx-datatable after the dropdown

If I change the datatable z-index to -1 the behavior changes but I can no longer manipulate the table (orderBy, activate, select, etc...).

What is the motivation / use case for changing the behavior?

Please tell us about your environment:
Windows 10

• Table version:
  20.1.0

• Angular version:
  15

• Browser: all

• Language: all