microsoft / microsoft/react-native-windows

Fabric RNTester hits an exception when focus changes

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#14,558 7 comments 0 reactions 0 assignees View on GitHub

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Area: Accessibility Area: Fabric bug New Architecture Workstream: Accessibility
Dominant language
C++
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Forks
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Avg merge
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Description

Problem Description

Recently tested rntester on main and everytime focus changes, an ignorable exception is hit. Assert hit in Fabric\Composition\CompositionRootAutomationProvider.cpp

Shown here:

Image

Callstack:
Image

Steps To Reproduce
  1. Run rn-tester-fabric
  2. hit any buttion

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the issue by running rn-tester-fabric and changing focus or activating a button, then inspect the assertion in Fabric\Composition\CompositionRootAutomationProvider.cpp and the attached callstack. Done means focus changes no longer hit the exception or assertion.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, react-native
Domain
accessibility, desktop-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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