When clicking on a mobile platform, some gameobject will trigger OnEnter event without OnExit event

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
csharp
Domain
game-dev, mobile-dev

Research direction

Start by locating TouchInputModule and its release path, then inspect how HandlePointerExitAndEnter updates the hovered list and invokes OnEnter and OnExit. Verify whether every object receiving OnEnter gets a corresponding OnExit when the pointer is released, and determine whether the release behavior matches the intended contract.

Written by the indexing model from the issue text.

Description

The TouchInputModule executes OnEnter by calling the HandlePointerExitAndEnter function, which calls OnEnter for newEnterTarget and all its ancestor nodes, and add all gameobject that have executed OnEnter to the hovered list.
However, when pointer release it executes OnExit on pointerEnter gameobject only.

Image

I think the correct approach is invoke HandlePointerExitAndEnter(pointerEvent, null) when pointer release. Is this a bug or an expectation?

Dominant language
C#
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Forks
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