igx-radial-gauge throws TypeError when destroyed immediately after initial render with eventCoalescing enabled

[mkamiishi]

Description

When provideZoneChangeDetection({ eventCoalescing: true }) is enabled in an Angular application, igx-radial-gauge throws a runtime TypeError if the component is destroyed immediately after the initial render.
In the attached reproduction sample, igx-radial-gauge is placed inside an Angular @if block. The condition is changed from true to false immediately after initialization, causing the gauge component to be destroyed shortly after it is created.
It appears that igx-radial-gauge schedules some asynchronous rendering or font/CSS-related processing during initialization. If the component is destroyed before that delayed processing runs, the internal code attempts to access an already disposed or null object.

Error
radial-gauge.html:1 ERROR TypeError: Cannot read properties of null (reading 'startCSSQuery')
at _FontUtil.getFontForClass (IRenderer_combined.js:307:11)
at _FontUtil.getFont (IRenderer_combined.js:382:25)
at _XamRadialGauge.bp (XamRadialGauge_combined.js:1859:29)
at _XamRadialGauge.i4 (XamRadialGauge_combined.js:1560:22)
at _XamRadialGauge.im (XamRadialGauge_combined.js:846:18)
at _XamRadialGaugeView.ag (XamRadialGauge_combined.js:2331:20)
at ret (type.js:1428:21)
at timer (zone.js:1491:27)
at _ZoneDelegate.invokeTask (zone.js:384:171)
at _pending_tasks-chunk.mjs:2389:49

Framework

Angular

Angular Version

21.2.0

Ignite UI for Angular Version

21.1.0

Component / Area

Other

Browser

Chrome

Operating System

Windows

Command Not Working

Steps to Reproduce

1. Run the attached application.
2. The runtime error occurs shortly after the gauge is destroyed.

Actual Result

A runtime TypeError is thrown:
Cannot read properties of null (reading 'startCSSQuery')

Expected Result

Destroying igx-radial-gauge shortly after initial rendering should not throw an error.

Reproduction URL

No response

Attachments

example-app-g.zip