p-dialog: Shift+Tab moves focus outside despite focusTrap and modal enabled

[alex-a-c]

Hello,

I am using p-dialog with focusTrap enabled as a modal dialog and have the following behaviour:
When I click with the mouse on the background and then press Shift+Tab, I start navigating through the Background elements.

Am I missing something or is it maybe a bug? Here is my dialog configuration:

`
<p-dialog
header="{{ translateKey + 'TITLE' | translate }}"
[modal]="true"
[focusTrap]="true"
[visible]="true"
[closable]="false"
[style]="{ width: '35rem' }"
[formGroup]="myForm"

`

Thanks!