Unreal Engine Issues and Bug Tracker (UE-63481)

Description

Making changes to the EQS Context and moving the Testing Pawn, the Editor crashes. When reopening the Editor, the context is set and the query does generate from that actor/location.

This issue was reported and tested in 4.20.2 (CL-4302132). This was reproduced in 4.19.2 (CL-4033788) and Main 4.21 (CL-4324949)

Steps to Reproduce

Download and open the attached project
Click on EQS_TestingPawn
Open EQS_Context
Make a change to EQS_Context and recompile it
Move the EQS_TestingPawn in the Viewport

*You may need to repeat steps 4 & 5 again for it to crash

Results: The Editor crashes

Expected: The Editor doesn't crash when the Testing Pawn is moved

Callstack

[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffdf5598bc UE4Editor-AIModule.dll!FEnvQueryInstance::PrepareContext() [d:\build\++ue4\sync\engine\source\runtime\aimodule\private\environmentquery\envqueryinstance.cpp:128]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffdf55a6ab UE4Editor-AIModule.dll!FEnvQueryInstance::PrepareContext() [d:\build\++ue4\sync\engine\source\runtime\aimodule\private\environmentquery\envqueryinstance.cpp:196]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffdf5ce7db UE4Editor-AIModule.dll!UEnvQueryTest_Distance::RunTest() [d:\build\++ue4\sync\engine\source\runtime\aimodule\private\environmentquery\tests\envquerytest_distance.cpp:53]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffdf53a264 UE4Editor-AIModule.dll!FEnvQueryInstance::ExecuteOneStep() [d:\build\++ue4\sync\engine\source\runtime\aimodule\private\environmentquery\envqueryinstance.cpp:420]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffdf550cc4 UE4Editor-AIModule.dll!AEQSTestingPawn::MakeOneStep() [d:\build\++ue4\sync\engine\source\runtime\aimodule\private\environmentquery\eqstestingpawn.cpp:261]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffdf5583ff UE4Editor-AIModule.dll!AEQSTestingPawn::PostEditMove() [d:\build\++ue4\sync\engine\source\runtime\aimodule\private\environmentquery\eqstestingpawn.cpp:364]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffe6c742d2 UE4Editor-UnrealEd.dll!UEditorEngine::ApplyDeltaToActor() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorengine.cpp:2740]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffe71791f5 UE4Editor-UnrealEd.dll!FLevelEditorViewportClient::ApplyDeltaToActor() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\leveleditorviewport.cpp:3800]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffe71798ca UE4Editor-UnrealEd.dll!FLevelEditorViewportClient::ApplyDeltaToActors() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\leveleditorviewport.cpp:3481]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffe71a29c3 UE4Editor-UnrealEd.dll!FLevelEditorViewportClient::InputWidgetDelta() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\leveleditorviewport.cpp:2434]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffe6dbc7e2 UE4Editor-UnrealEd.dll!FEditorViewportClient::UpdateMouseDelta() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorviewportclient.cpp:2128]
[2018.08.29-16.53.04:822][129]LogWindows: Error: [Callstack] 0x00007fffe6db791d UE4Editor-UnrealEd.dll!FEditorViewportClient::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorviewportclient.cpp:1178]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007fffe71b63c1 UE4Editor-UnrealEd.dll!FLevelEditorViewportClient::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\leveleditorviewport.cpp:2128]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007fffe6cc76e2 UE4Editor-UnrealEd.dll!UEditorEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorengine.cpp:1765]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007fffe75bf646 UE4Editor-UnrealEd.dll!UUnrealEdEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:403]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff74d305cbd UE4Editor.exe!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3495]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff74d315b3c UE4Editor.exe!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:166]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff74d315bba UE4Editor.exe!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff74d323dac UE4Editor.exe!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff74d325aaa UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff838b11fe4 KERNEL32.DLL!UnknownFunction []
[2018.08.29-16.53.04:823][129]LogWindows: Error: [Callstack] 0x00007ff8398acb31 ntdll.dll!UnknownFunction []

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Fixed

Component	UE - Gameplay
Affects Versions	4.19.2, 4.20.2, 4.21
Target Fix	4.21

Fix Commit	4339718
Main Commit	4344176
Release Commit	4399518

Created	Aug 29, 2018
Resolved	Sep 3, 2018
Updated	Oct 2, 2018

View Jira Issue

UE-63481

EQS Context modifications Crashes Editor

EQS Context modifications Crashes Editor

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