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Fixed in 1.1-pre.5



Found in [Package]


Issue ID




Crash when adding InputSystem.Update() to InputSystem command handler to force processing an event and sending input

Package: Input System


How to reproduce:
1. Open the attached project ('')
2. Enter Play Mode
3. Click the up and down arrow keys (using the keyboard) a few times

Reproducible with: 2020.2.6f1, 2021.1.0b7, 2021.2.0a5 (1.1.0-preview.1, 1.1.0-preview.3)
Could not test with: 2018.4.32f1, 2019.4.20f1 (errors when downgrading)
Could not test with package version: 1.0.2 ('IInputActionCollection2' not yet implemented)

This error message might appear before the crash: 'StackOverflowException: The requested operation caused a stack overflow.'

  1. Resolution Note (fix version 1.1-pre.5):

    the bug is fixed now in the sense that users are not allowed to call InputSystem.Update() from inside an input system action handler.

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