fix(nav): defer non-animated swipe back until the gesture completes

[ShaneK]

Issue number: resolves #29793

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What is the current behavior?

Currently, swipe to go back on ion-nav and ion-router-outlet starts the back transition as soon as the gesture starts. With animations disabled, through either the animated prop or the global config, there's no progress animation for the swipe to drive, so the transition completes instantly. The previous page gets its enter lifecycle events even when the swipe is abandoned, and a completed swipe never navigates.

What is the new behavior?

With animations disabled, the swipe now waits until it's released to decide whether to go back. A completed swipe goes back without an animation and an abandoned one does nothing. For ion-router-outlet, core calls the swipe handler's onStart and onEnd(true) on release, so Angular, React and Vue didn't need changes. The host also ignores pointer events during the swipe, the same way a swipe-driven transition does, so releasing doesn't click whatever is under the pointer.

Does this introduce a breaking change?

• Yes
• No

Other information

Relevant test screen (Angular)

Current dev build

9.0.7-dev.11791478996.1b854592

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Project	Deployment	Actions	Updated
ionic-framework	Ready	Preview	Oct 8, 2026 5:06pm UTC