Unreal Engine Issues

Drag in event graph does not work after touch event with breakpoint

Dragging in event graph does not work after touch event with a breakpoint. This issue persists after the PIE has stopped as well. But the issue is resolved when the project is reopened. Regression: ...

Gameplay Tag Redirectors are not updating properly with nodes

Gameplay Tag Re-directories are not updating properly with nodes. Specific nodes include: "Make literal gameplay tag" and Switch on gameplay tag. Versions Tested: 4.15.3 - CL: 3450819 4.16.2 - CL: ...

User project crashes after changing struct

Adding a Blueprint Interface (with function named "Test") to a Widget Blueprint with a variable named "Test" crashes the editor when compiling

Giving the Blueprint Interface Function and the Widget Blueprint Variable the same name, then adding the Blueprint Interface to the Widget Blueprint, causes the editor to immediately crash when comp ...

Crash upon launching packaged game with Share Material Shader code enabled

When launching a packaged game that has Share Material Shader Code enabled, the process will crash before opening. Regression?: Yes This issue does not occur in 4.17.2-3658906+++UE4+Release-4.17 Th ...

Building Lighting fails when lightmass importance volume scale is large

There is an issue when attempting to build lighting with a large lightmass importance volume when you build the lighting the editor freezes. This issue appears to be a regression Versions tested: 4 ...

Generate Particle Event Blueprint node doesnt generate particles at relative "InLocation"

The EventReceiver Spawn module doesnt seem to take in parameters from linked Particle Generated Event. When setting the location of the Blueprint node (In Location), the relative position of the Par ...

Random Deviation of 0 causes service node instantiation fail

Licensee has 4 Services that aren't being initialized with their respective Tasks when they Plays in Editor. If the Behavior Tree is opened first, the warnings do not appear. All 4 of the Services h ...

Event Dispatcher implementation called several times (number of bound refs increases every compile)

The number of calls to the Event Dispatcher increase each time the blueprint actor containing the reference is compiled. This issue was not present in 4.18.3 (CL-3832480) but is in 4.19.2 (CL-403378 ...

When a Sublevel has "Initially Loaded" set to true and "Initially Visible" set to false, the Editor will crash after exiting PIE

If you have a sub level with "Initially Loaded" set to true and "Initially Visible" set to false it will crash after exiting PIE. This issue was reported and tested in 4.20.1 (CL-4233996). It has ...