Render state for InstanceStaticMesh doesn't recreate after modification of instances list with RemoveInstance

UE - Gameplay - Blueprint - Sep 14, 2017

When Remove Instance is called for an instance static mesh component, the render state is not properly updated, causing some of the instances to not be visible. Workaround: Forcing a call to PostEd ...

Editor crash when adding element to Instance array of custom InstanceStaticMeshComponent

UE - Gameplay - Blueprint - Sep 14, 2017

Adding an instance static mesh component to a class causes the editor to crash when an instance is added to a blueprint of the class. Regression: Yes - this behavior does not occur on 4.16.3 (CL 35 ...

Editor Crashes on Opening After Deriving C++ Class from Another Class

UE - Foundation - Cpp Tools - Hot Reload - Sep 13, 2017

After deriving a C++ class from another class and then closing the editor, the project will crash when reopened. This crash will continue until the project files are regenerated and the project is r ...

CLONE - Project does not cook with actors containing ModularSynth component

UE - Audio - Sep 13, 2017

A project does not cook with actors containing ModularSynth component. The error is a follows UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT UATHelper: Pack ...

Vertex Colors distort after merge actors is used

OLD - Anim - Sep 11, 2017

When using the merge actor tools with Vertex colors painted on, the resulting mesh will have those colors distorted. This issue occurs only with the resulting static mesh. This issue is a regression ...

Changing the "Color Vision Deficiency Preview Type" setting under "Editor Preferences" does not work

Tools - Sep 11, 2017

Making changes to the "Color Vision Deficiency Preview Type" under the "Editor Preferences" does not change the Color Vision Preview. Regression: Yes Works in: 4.16.3-3561208 Does not work in : ...

"Cook Content For Windows" command does not respect value of Blueprint Nativization Method INI setting.

UE - Gameplay - Blueprint - Sep 9, 2017

This is a UAT-driven workflow in the editor that's not currently looking at the INI setting to infer whether or not -nativizeAssets should be implicitly added to the BuildCookRun command line. It sh ...

Unable to right-click properties in Details panel

Tools - Sep 8, 2017

REGRESSION: Yes, does not occur in 4.17. User is not able to summon copy/paste options by right-clicking on a property in the Details panel. Reproduced this in Level Editor and Blueprint Editor. ...

User isn't prompted to restart the editor when changing Local DDC path

UE - Foundation - Core - Sep 6, 2017

When changing the Local Derived Data Cache setting in Editor Preferences, the user isn't prompted to restart the editor, unlike other settings that require a restart to work. ...

Typo in Blueprint Context Menu "Redundent"

UE - Gameplay - Sep 6, 2017

There is a spelling error when hovering mouse over disabled checkboxes under Blueprint Context Target(s). The text appears as "This target is invalid or redundent for this context." The correct spel ...