Cannot open Dropdowns popup when inside a Dialog with rtl mode enabled and small resolution

[mbechev]

Description

When displaying any dropdown component inside a Dialog, the popup cannot be opened. This happens when dir property of the document is set to rtl and on a small resolution 540x720.

  ngAfterViewInit() {
    const documentElement = this.document.documentElement;
    this.renderer.setAttribute(documentElement, 'dir', 'rtl');
  }

Steps To Reproduce

1. Open the demo in a new window
2. Enable the emulator and set the resolution to 540x720:
3. Open the Dialog and try to open the ComboBox popup.
   https://stackblitz.com/edit/angular-3xi553zf-pyuzmyso

Screenshots or video

Screen.Recording.2025-01-30.at.12.39.34.mov

Actual Behavior

The popup is immediately closed which leads to this flickering. Using the Window component doesn't produce such an error:
https://stackblitz.com/edit/angular-3xi553zf-ndqhy

Expected Behavior

The functionality of the dropdowns should not be affected by this configuration.