Adding a Pass By-Reference input parameter to an event dispatcher is allowed, but causes a warning when called.

UE - Gameplay - Blueprint - Nov 19, 2018

You can add a pass-by-reference input variable to an Event Dispatcher, but it will will result in compile warnings, and changes to that input will not affect the value of the variable in the caller. ...

[Feature Request] ReferenceViewer: Accept dynamic collection

Tools - Oct 29, 2019

In 4.23, Setting a dynamic collection to the collection filter slot does not display any result. And there are no information about dynamic collection doesn't work in collection filter. (FCollectio ...

Editor crashes on compile with no warning when trying to access information from a "Slot as Canvas Slot" node on tick that has not been set yet by begin play

UE - Editor - UI Systems - Jul 1, 2015

If a user creates a widget variable that is set on begin play and then tries to get information from that widget via the "Slot as Canvas Slot" node on tick the editor will crash. This appears to hap ...

Copy, Paste and Hover a Material Layer Blend Node causes Crash

Tools - Jun 25, 2015

In the Material Editor, if all Live Previews are turned off, copying and pasting a Material Layer Blend Node will crash when the tool tip is being processed. Also Reproduced in Main Promotable-CL-2 ...

Crash when applying force on event tick to DM

UE - Simulation - Physics - Destruction - Jun 19, 2015

When using a DM and applying force via blueprints with event tick will cause a crash. Workaround: Using a timer instead will not cause any crash even with very low values. Crashreporter: [Link Re ...

Switcher widget causes a crash when dragging a widget out of it and on to the canvas panel

UE - Editor - UI Systems - Aug 6, 2015

If the user adds two widgets to a switcher and then tries to drag one out of it the editor will crash ...

Setting the Camera Modifier to 'None' crashes the editor

UE - Gameplay - Jul 14, 2015

The PlayerCameraManager will cause the engine to crash if you set the first element to 'none' under the Camera Modifier. ...

Calling Open Level causes editor to freeze or crash

UE - Gameplay - Jul 14, 2015

If the Open Level node is called on a persistent level Whttp://crashreporter/Crashes/Show/1838504 then the editor will freeze is the call is made through code or crash if done through blueprints. C ...

Crash when Listen Server Attempts ServerTravel in Play in New Editor Window

UE - Networking - Jun 9, 2015

JamesG: New callstack on UDN thread points to UNetDriver::TickFlush Editor crashes if a listen server attempts to use the console command ServerTravel while in Play in a New Editor Window. CrashR ...

Editor crashes on user project when attempting to spawn an actor from a struct within user's project.

UE - Networking - Sep 23, 2015

Editor crashes when attempting to spawn an actor from a struct within user's project. Frequency: 5/5 crashreporter: [Link Removed] ...