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EventSystem.current.RaycastAll returns incorrect results when moving a Canvas with "Screen Space-Camera" Render Mode



How to reproduce:
1. Open the “IN-77241_repro“ project
2. Open the ”SampleScene”
3. Enter Play Mode
4. Place the mouse on the right edge of the “TestImage“ GameObject
5. Press the Left Arrow key and observe the “TestImage“

Expected result: The GameObject stays green
Actual result: The GameObject flickers or becomes red

Reproducible with: 2021.3.39f1, 2022.3.31f1, 6000.0.4f1

Reproducible on: Windows 10
Not reproducible on: No other environment tested

Note: In step 4 the mouse should be positioned as far as possible from the center of the GameObject, however, enough to turn it green

  1. Resolution Note:

    This is as designed because the RectTransform of the image is not computed at the time you make the call for the raycast. A simple fix would be to put the raycast logic in a coroutine that waits until the end of the frame.
    You can read more about RectTransform here:

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