bug(MatSelect): When panel is displayed inside a SideNav, it stays opened on Escape button

[rsi21]

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Is this a regression?

• [ ] Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

Hi,

When using MatSelect inside a SideNav, if the panel is opened and we close the sideNav with the Escape button, the MatSelect panel stays opened.

I expected the same behavior like with the MatDatePicker, if the picker panel is opened, when using Escape the picker is closed first, and then using Escape again closes the sideNav.

I also provide the same sample inside a Dialog using the MatSelect and MatDatePicker and in this case, both works the same way and correctly.

The issue seems related to this one: https://github.com/angular/components/issues/7981

Thanks

Reproduction

StackBlitz link: https://stackblitz.com/edit/components-issue-starter-r9az1u4q Steps to reproduce:

1. Click on button to open the SideNav
2. Open the MatSelect panel
3. Click on Escape

Expected Behavior

MatSelect should be closed with the escape button instead of the SideNav

Actual Behavior

SideNav is closed and MatSelect panel stays visible

Environment

• Angular: 18 (same issue in 19)
• CDK/Material: 18 (same issue in 19)
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Windows