Unreal Engine Issues

SButton does not release mouse capture if it becomes disabled before MouseUp event occurs

It appears that if a slate widget becomes disabled, the MouseUp events won't fire. As a side effect, a mouse capture will not be released if something causes the button to become disabled before the ...

Launch crashes on Android if device has Wifi disconnected

Launch On crashes on a Android devices if networking is disabled. This used to work and should not crash. ...

Non-overridden BP update for Animation Blueprints not Calling Parent Function.

User in the linked UDN reports that the parent BP update was not being called in an animation blueprint unless they hooked up the parent call. By default this call is greyed out in the graph and sh ...

Materials using Media Textures appear upside down in UMG on Android

When a user applies a media texture to a material and then applies this to an image widget, this material appears upside down when launched on to the Galaxy Note 3 (OS-Android 5.0) and the Nexus 5 ( ...

Traveling away from, then back to the original map in multi-process PIE with the editor as a client causes an assert

An assert is triggered in this case because in multi-process PIE, if the editor is a client, the PIEInstance of the world context remains at -1 (see UEditorEngine::PlayInEditor). If this client inst ...

Slider doesn't properly bubble the OnKeyDown event

Once a slider receives keyboard focus, the keys will not navigate away regardless of the navigation settings. This is because the slider's OnKeyDown function does not pass along the call when the ev ...

World Composition "Add Adjacent Landscape Level" doesn't work correctly with landscapes that were created in the landscape editor (outside of world composition)

Changing the name of a GameMode Blueprint that is set as the Default in Project Settings and then clicking the Project Settings Default GameMode dropdown will crash the editor

Changing the name of a GameMode Blueprint that is set as the Default in Project Settings and then clicking the Project Settings Default GameMode dropdown will crash the editor. No crash report is ge ...

[CrashReport] UE4Editor_Slate!FMenuStack::DismissInternal() [menustack.cpp:582]

Error Message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 785] Array index out of bounds: 1 from an array of size 0 Source Context: 567 } 568 } 569 ...

Minor memory leaks in Recast code

It seems there's a fair amount of allocations in Recast code that allocate n elements, but release the memory with as a single element (delete ptr). ...