Unreal Engine Issues

FOnlineSessionLive leaves inconsistent state when FindSessions or CreateSession fail.

FOnlineSessionLive::CreateSession creates the session early into the method. Later, the method can fail but the session and is never cleared up (see the various catch statements in the tasks which o ...

Localization code incorrectly retrieves ManifestName rather than AcrhiveName

In FTextLocalizationResourceGenerator::GenerateAndUpdateLiveEntriesFromConfig() lines 216-222 are meant to get the Archive Name. However line 218 appears to be a copy of line 210 and is set to Mani ...

Vectorized and Non-Vectorized FTransform Accumulate are inconsistent with Blendweights

The vectorized version of FTransform::Accumulate and FTransform::AccumulateWithAdditiveScale3D only blend the rotation, but not the translation or scale. This is divergent behavior from the non-vec ...

Crash caused by pre/post tick being called while on the Slate loading thread

Currently, we do not prevent the calling of pre/post tick from the Slate loading thread. This can cause crashes in circumstances where the widget is destroyed before the tick is completed, and inval ...

PacketHandlerPCH.h missing header include guard

Engine\Source\Runtime\PacketHandlers\PacketHandler\Private\PacketHandlerPCH.h is missing the #Pragma Once header define guard which causes build to fail. ...

SVN SASL binaries may be causing crashes for some users

Some users are reporting crashes when attempting to connect to SVN after upgrading to 4.15. The only relevant change to SVN was the update of the 1.9 binaries to support SASL, so it's possible that ...

[CrashReport] UE4Editor_Core!FWindowsWindow::Initialize() [windowswindow.cpp:199]

Error message: Assertion failed: 0 [Link Removed] [Line: 199] Window Creation Failed (1158) Source Context: 184 VirtualHeight = ClientHeight; 185 186 // We call reshape w ...

Integrate fix for improper failure case for allocation of RenderTargets in Oculus

CL 3278583 contains a fix for improper failure state allocation of render targets, which causes intermittent crashes when the HMD is unplugged or has a power interruption. This CL fixes the crash ...

Crash when Calling Enable HMD (True) in a shipping build

Crash with empty callstack when Calling Enable HMD (True) in a shipping build ...

Pressing Ctrl+Shift+F in UMG designer mode will pop up a new tab named (unrecognized tab)