Touches on windows generate 2 mouse events.

UE - Editor - UI Systems - Slate - Mar 22, 2017

The problem is that windows supplies both a touch event and a mouse event for each touch. The engine then handles touches as mouse input so that UI elements can work correctly on touch platforms. ...

Editor crash when adding elements to blueprint Set/Map

UE - Gameplay - Blueprint - Mar 22, 2017

Adding multiple element to TMap / TSet variable at once with a for loop causes the editor to lock up / crash (respectively). Regression: No - Map & Set variable types not available prior to 4.15 ...

Crash While Loading UTexture Data Inside PostLoad During Open Level

UE - Graphics Features - Mar 22, 2017

(User provided info) Crash (check fail critical error) if you try to load a UTexture's data (eg UpdateResource() or PlatformData .. Mip .. Lock/GetCopy) inside a PostLoad of anything during an Open ...

Ensure triggered when exiting PIE with dedicated server options

UE - Networking - Mar 22, 2017

When "Use Single Process" and "Use Less CPU when in Background" are checked off, running a dedicated server in PIE will cause an ensure on exit Regression: Yes - Behavior does not occur in binary 4 ...

Assert message in TArray::CheckAddress is not appropriate for all situations

UE - Foundation - Core - Mar 21, 2017

The assert message in CheckAddress is as follows:"Attempting to add a container element (%p) which already comes from the container (%p, ArrayMax: %d, ArrayNum: %d, SizeofElement: %d)!" This assert ...

[CrashReport] Crash can occur when applying Apex cloth to a Material slot

UE - Simulation - Physics - Character - Mar 21, 2017

No known crash with users I had been in contact with on the latest PhysX plugin for 3dxMax or Maya. I've had a few posts dealing with using Apex and assigning cloth assets with no crashing so I feel ...

material editor: Auto variable name generation bug

UE - Rendering Architecture - Materials - Mar 21, 2017

If you create a parameter collection node in a material and select a parameter from the drop down and then copy and paste that node a _1 will be appended to the end of the parameter collection varia ...

Post increment operator is not overridden for data structure iteration

UE - Foundation - Core - Mar 21, 2017

Attempting to use a post increment operator in a TMap or TSet iterator will fail to compile with error shown in callstack field. This is due to the post-increment operator not being overridden in M ...

Remote building for iOS and tvOS does not properly remove files from previous builds causing compile failures

UE - Platform - Mobile - Mar 21, 2017

Remote building for iOS/tvOS is leaving behind generated files which can cause various compile issues when creating different projects in different streams with the same name (MyProject, MyProject1, ...

Clearing text property from a Text widget won't work the first time

UE - Editor - UI Systems - Mar 21, 2017

It currently takes two attempts to clear the default text from a Text Block widget. The first time you try, the property will repopulate with the previous string. ...