Attempting to run a standalone server and client using different processes will crash if the Code Editor plugin is enabled.
RESULT:
The server crashes, and the client window remains black since there is no server to connect to.
EXPECTED:
The server starts successfully and the client connects to the server successfully.
LogWindows: Error: === Critical error: === LogWindows: Error: LogWindows: Error: Assertion failed: IsValid() [File:D:\Main-Builds\Stream\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 838] LogWindows: Error: LogWindows: Error: LogWindows: Error: LogWindows: Error: [Callstack] 0x000007fefd58bded KERNELBASE.dll!UnknownFunction [] LogWindows: Error: [Callstack] 0x000007fec831d6d7 UE4Editor-Core.dll!ReportAssert() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowsplatformcrashcontext.cpp:531] LogWindows: Error: [Callstack] 0x000007fec832015e UE4Editor-Core.dll!FWindowsErrorOutputDevice::Serialize() [d:\main-builds\stream\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:70] LogWindows: Error: [Callstack] 0x000007fec80e7aa7 UE4Editor-Core.dll!FOutputDevice::LogfImpl() [d:\main-builds\stream\engine\source\runtime\core\private\misc\outputdevice.cpp:71] LogWindows: Error: [Callstack] 0x000007fec805e177 UE4Editor-Core.dll!FDebug::AssertFailed() [d:\main-builds\stream\engine\source\runtime\core\private\misc\assertionmacros.cpp:413] LogWindows: Error: [Callstack] 0x000007fec74a7acb UE4Editor-Slate.dll!FSlateApplication::Get() [d:\main-builds\stream\engine\source\runtime\slate\public\framework\application\slateapplication.h:302] LogWindows: Error: [Callstack] 0x000007fea5d0b00b UE4Editor-MainFrame.dll!FMainFrameCommands::RegisterCommands() [d:\main-builds\stream\engine\source\editor\mainframe\private\frame\mainframeactions.cpp:83] LogWindows: Error: [Callstack] 0x000007fea5d0aeb2 UE4Editor-MainFrame.dll!TCommands<FMainFrameCommands>::Register() [d:\main-builds\stream\engine\source\runtime\slate\public\framework\commands\commands.h:57] LogWindows: Error: [Callstack] 0x000007fea5d119ec UE4Editor-MainFrame.dll!FMainFrameModule::StartupModule() [d:\main-builds\stream\engine\source\editor\mainframe\private\mainframemodule.cpp:495] LogWindows: Error: [Callstack] 0x000007fec81483b9 UE4Editor-Core.dll!FModuleManager::LoadModuleWithFailureReason() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:548] LogWindows: Error: [Callstack] 0x000007fec81475bc UE4Editor-Core.dll!FModuleManager::LoadModule() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:367] LogWindows: Error: [Callstack] 0x000007fec8147607 UE4Editor-Core.dll!FModuleManager::LoadModuleChecked() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:372] LogWindows: Error: [Callstack] 0x000007feb07bfa20 UE4Editor-LevelEditor.dll!FLevelEditorModule::StartupModule() [d:\main-builds\stream\engine\source\editor\leveleditor\private\leveleditor.cpp:232] LogWindows: Error: [Callstack] 0x000007fec81483b9 UE4Editor-Core.dll!FModuleManager::LoadModuleWithFailureReason() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:548] LogWindows: Error: [Callstack] 0x000007fec81475bc UE4Editor-Core.dll!FModuleManager::LoadModule() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:367] LogWindows: Error: [Callstack] 0x000007fec8147607 UE4Editor-Core.dll!FModuleManager::LoadModuleChecked() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:372] LogWindows: Error: [Callstack] 0x000007fea3bcacfe UE4Editor-CodeEditor.dll!FCodeEditor::StartupModule() [d:\main-builds\stream\engine\plugins\experimental\codeeditor\source\codeeditor\private\codeeditor.cpp:69] LogWindows: Error: [Callstack] 0x000007fec81483b9 UE4Editor-Core.dll!FModuleManager::LoadModuleWithFailureReason() [d:\main-builds\stream\engine\source\runtime\core\private\modules\modulemanager.cpp:548] LogWindows: Error: [Callstack] 0x000007feee29f3a3 UE4Editor-Projects.dll!FModuleDescriptor::LoadModulesForPhase() [d:\main-builds\stream\engine\source\runtime\projects\private\moduledescriptor.cpp:593] LogWindows: Error: [Callstack] 0x000007feee2b3d81 UE4Editor-Projects.dll!TryLoadModulesForPlugin() [d:\main-builds\stream\engine\source\runtime\projects\private\pluginmanager.cpp:922] LogWindows: Error: [Callstack] 0x000007feee29f0f8 UE4Editor-Projects.dll!FPluginManager::LoadModulesForEnabledPlugins() [d:\main-builds\stream\engine\source\runtime\projects\private\pluginmanager.cpp:987] LogWindows: Error: [Callstack] 0x000000013fed89ba UE4Editor.exe!FEngineLoop::LoadStartupModules() [d:\main-builds\stream\engine\source\runtime\launch\private\launchengineloop.cpp:3111] LogWindows: Error: [Callstack] 0x000000013fedea7c UE4Editor.exe!FEngineLoop::PreInit() [d:\main-builds\stream\engine\source\runtime\launch\private\launchengineloop.cpp:2513] LogWindows: Error: [Callstack] 0x000000013fed5d82 UE4Editor.exe!GuardedMain() [d:\main-builds\stream\engine\source\runtime\launch\private\launch.cpp:135] LogWindows: Error: [Callstack] 0x000000013fed5fda UE4Editor.exe!GuardedMainWrapper() [d:\main-builds\stream\engine\source\runtime\launch\private\windows\launchwindows.cpp:145] LogWindows: Error: [Callstack] 0x000000013fee5a6c UE4Editor.exe!WinMain() [d:\main-builds\stream\engine\source\runtime\launch\private\windows\launchwindows.cpp:269] LogWindows: Error: [Callstack] 0x000000013fee848e UE4Editor.exe!__scrt_common_main_seh() [d:\agent\_work\3\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] LogWindows: Error: [Callstack] 0x00000000778059cd kernel32.dll!UnknownFunction [] LogWindows: Error: [Callstack] 0x0000000077a6385d ntdll.dll!UnknownFunction [] LogWindows: Error:
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-68673 in the post.