Unreal Engine Issues and Bug Tracker (UE-153643)

Description

This is not a regression. Tested in //UE4/Release-4.27 CL 18319896

Making changes to a Camera Shake while previewing the Camera Shake triggers an Assertion upon compiling.

Steps to Reproduce

Create or open any Project
Create and open a Blueprint derived from Camera Shake Base named 'BP_Shake'
1. Set Root Shake Pattern to Perlin Noise Camera Shake Pattern
2. Set FOV Amplitude and Frequency to 3.0
3. Under Timing set Duration to 0.0
4. Compile and Save the Blueprint
In the level place a Camera Shake Source Actor
In the Source Actor's details panel set Camera Shake to BP_Shake
Ensure the Camera is in range to be affected by the Camera Shaker
In the Viewport Options enable Allow Camera Shakes
In the Menu select Window > Cinematics > Camera Shake Previewer
Select the Camera Shake Source then press play
Go back to BP_Shake
Change FOV Amplitude(or any value) to 1.0(any amount) then compile

Expected Results:
The Shake is updated or the previewer is paused.

Actual Results:
The Editor crashes with an Assertion:

State.IsActive() [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Camera\CameraShakeBase.cpp] [Line: 230] Updating a camera shake that wasn't started with a call to StartShake!

Callstack

=== Critical error: ===

Assertion failed: State.IsActive() [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Camera\CameraShakeBase.cpp] [Line: 230] 
Updating a camera shake that wasn't started with a call to StartShake!


[Callstack] 0x00007ffd6d587e21 UnrealEditor-Engine.dll!UCameraShakeBase::UpdateAndApplyCameraShake() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Camera\CameraShakeBase.cpp:230]
[Callstack] 0x00007ffd6d56d514 UnrealEditor-Engine.dll!UCameraModifier_CameraShake::ModifyCamera() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Camera\CameraModifier_CameraShake.cpp:57]
[Callstack] 0x00007ffd4835c78a UnrealEditor-CameraShakePreviewer.dll!FCameraShakePreviewUpdater::ModifyCamera() [D:\build\++UE5\Sync\Engine\Plugins\Cameras\CameraShakePreviewer\Source\CameraShakePreviewer\Private\SCameraShakePreviewer.cpp:102]
[Callstack] 0x00007ffd4835364c UnrealEditor-CameraShakePreviewer.dll!TBaseRawMethodDelegateInstance<0,SCameraShakePreviewer,void __cdecl(FEditorViewportViewModifierParams &),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:470]
[Callstack] 0x00007ffd8f08a79f UnrealEditor-UnrealEd.dll!FEditorViewportClient::CalcSceneView() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorViewportClient.cpp:892]
[Callstack] 0x00007ffd8f4d1301 UnrealEditor-UnrealEd.dll!FLevelEditorViewportClient::CalcSceneView() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\LevelEditorViewport.cpp:1904]
[Callstack] 0x00007ffd8f094b50 UnrealEditor-UnrealEd.dll!FEditorViewportClient::Draw() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorViewportClient.cpp:3941]
[Callstack] 0x00007ffd6ecab462 UnrealEditor-Engine.dll!FViewport::Draw() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\UnrealClient.cpp:1615]
[Callstack] 0x00007ffd8f014379 UnrealEditor-UnrealEd.dll!UEditorEngine::UpdateSingleViewportClient() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:2267]
[Callstack] 0x00007ffd8f00e8f9 UnrealEditor-UnrealEd.dll!UEditorEngine::Tick() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:1949]
[Callstack] 0x00007ffd8f999f56 UnrealEditor-UnrealEd.dll!UUnrealEdEngine::Tick() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:474]
[Callstack] 0x00007ff7d4fa82f6 UnrealEditor.exe!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5215]
[Callstack] 0x00007ff7d4fc0d9c UnrealEditor.exe!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:183]
[Callstack] 0x00007ff7d4fc0e8a UnrealEditor.exe!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:147]
[Callstack] 0x00007ff7d4fc3c4d UnrealEditor.exe!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:283]
[Callstack] 0x00007ff7d4fd5534 UnrealEditor.exe!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:330]
[Callstack] 0x00007ff7d4fd86e6 UnrealEditor.exe!__scrt_common_main_seh() [d:\a01\_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
[Callstack] 0x00007ffe08eb7c24 KERNEL32.DLL!UnknownFunction []
[Callstack] 0x00007ffe0abed721 ntdll.dll!UnknownFunction []

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Fixed

Component	UE - Anim - Sequencer
Affects Versions	5.0.1
Target Fix	5.1

Fix Commit	20366330
Main Commit	20366330

Created	May 23, 2022
Resolved	May 25, 2022
Updated	May 29, 2022

View Jira Issue

UE-153643

Making changes to a Camera Shake while previewing the Camera Shake triggers a crash

Making changes to a Camera Shake while previewing the Camera Shake triggers a crash

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