Unreal Engine Issues
Unreal Engine Issues
JsonObjectToUStruct removes _ClassName from input FJsonObject, breaking repeated deserialization
UE - Core - Systems - Mar 18, 2026FJsonObjectConverter::JsonObjectToUStruct removes _ClassName from nested JSON objects during deserialization. Removing Obj->RemoveField(ObjectClassNameKey) from ConvertScalarJsonValueToFPropertyWit ...
Event Trace Log prints node actions multiple times
UE - Gameplay - Blueprint - Jun 10, 2015If a blueprint has a breakpoint on a node and that node is utilized in PIE, the Event Trace in the Debug Log window will register each action taken by the blueprint multiple times. ...
character movement velocity negatively affected by framerate
UE - Gameplay - Oct 28, 2015Lower framerates directly affect the velocity of a character's movement if that velocity is provided by another source. ...
Packaged VehicleGame loses in game music and other audio elements after selecting restart track via pause menu
UE - Audio - Jan 19, 2017I wasn't sure how to get additional audio logging and asked around, but could not get the commands for what I need. I'm waiting on our Audio SME to come in (different time zone) to see how I can get ...
Any nodes after a reroute node do not list stats in the Blueprint Profiler
UE - Gameplay - Blueprint - May 18, 2016No Profiler stats are being listed for nodes after a reroute node. Just the nodes are listed with no stats present. ...
Cameras rotate incorrectly in Sequencer when using Key All and Auto-Key options
UE - Anim - Sequencer - Dec 14, 2018Sequencer is having issues handling a camera rotation going past -180 or 180 degrees with multiple keyframes when Key All and Auto-Key options are enabled. This results in unwanted 180 degree flip w ...
Can't Play In Editor after editing color value in color picker
UE - Anim - Runtime - Oct 23, 2020Can not launch PIE after set the value in color picker window to enter a number from the keyboard. Choose the color value with the picker or close the window with the Cancel button to return to it. ...
IOS mouse pointer / cursor support
UE - Platform - Mobile - Systems - Jan 20, 2022Crash right-clicking in anim blueprint asset picker
OLD - Anim - Mar 10, 2017Editor crashes when right-clicking in the blank area of the anim blueprint asset picker ...
Scaling sphere with gizmo causes it to not work with line trace
UE - Editor - Workflow Systems - Mar 16, 2021Changing the scale of an actor with the level editor gizmo follows a very different codepath than changing it via the details panel. A side effect of this seems to be that line traces will no longer ...