bug: Crash with presenting element on IonModal

[Ericlm]

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v8.x

Current Behavior

When creating an IonModal which have an IonPage as its presentingElement, the page crashes with the error :

While the components hierarchy is following this behavior :

Expected Behavior

The components should not crash as they are in the expected hierarchical order.

Steps to Reproduce

1. Create an Ionic app
2. Inside of an IonPage, add an IonModal
3. Set a ref on the IonPage, and put the page as the presenting element of the modal : :presenting-element="page?.$el"
4. When resizing the page, the crash occurs.

Code Reproduction URL

https://github.com/Ericlm/ion-modale-presenting

Ionic Info

Ionic:

Ionic CLI : 7.2.1 (/Users/ericlemaitre/.asdf/installs/nodejs/24.3.0/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/vue 8.6.5

Capacitor:

Capacitor CLI : 7.4.2
@capacitor/android : not installed
@capacitor/core : 7.4.2
@capacitor/ios : not installed

Utility:

cordova-res : not installed globally
native-run : 2.0.1

System:

NodeJS : v24.3.0 (/Users/ericlemaitre/.asdf/installs/nodejs/24.3.0/bin/node)
npm : 11.4.2
OS : macOS Unknown

Additional Information

No response