Unreal Engine Issues
Unreal Engine Issues
UHT "Type TArray is not supported by blueprint" error message is ambiguous
UE - Foundation - Cpp Tools - UnrealHeaderTool - Jan 11, 2019An overly generic error message is produced when you have a TArray UProperty that contains a non-blueprint friendly type. For example: UPROPERTY(EditAnywhere, BlueprintReadWrite, editfixedsize) TA ...
Event Dispatcher implementation called several times (number of bound refs increases every compile)
UE - Gameplay - Jun 26, 2018The 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 ...
On mouse Down not firing for left click on Button widgets when using precise click
UE - Editor - UI Systems - Aug 31, 2017When using the left mouse button to click and drag a button, the on drag detected will not fire even when using precise click. This was not the case in previous versions of the engine (Works as expe ...
Event Graph 'Begin Overlap' event fires while not in Simulate or PIE
UE - Gameplay - Components - Feb 20, 2017Event Graph 'Begin Overlap' event fires while not in Simulate or PIE. It seems to somehow be linked to the components. If the actor contains a Box Collision component and either a Static Mesh comp ...
Crash when using Find Substring node if the starting position is higher than the number of characters in the string being searched
UE - Gameplay - Blueprint - Jul 17, 2017If the "Start Position" in the "Find Substring" node is larger than the number of characters in the "Search in" field a crash will occur. ...
Event does not fire at end of playback range
UE - Anim - Sequencer - Aug 29, 2016Event does not fire at end of playback range. This does work with Forced Fixed Frame Interval Playback so wonder if this is invalid? I have some test content set up in //UE4/Main QAGame QA-Promoti ...
Tick fires in PlayerController BP in Editor
UE - Gameplay - Blueprint - Oct 6, 2016If a blueprint has any functionality on tick, the tick event will fire when a blueprint is restored within the editor after closing and reopening a project. Regression (no) issue (does) occur in 4 ...
Performance decreases with the number of morph targets
UE - Anim - Rigging - Jun 15, 2023Performance decreases quite a bit on characters with large number of morph targets, as soon as even one target is active. ...
Packaging Project with Nativize Blueprint Assets Prevents Overlap Events from Firing
UE - Gameplay - Blueprint Runtime - Mar 31, 2016Currently, I have been unable to reproduce this issue outside of the user's project that is provided in the repro steps. Packaging a game that has the experimental feature Nativize Blueprint Assets ...
Touch release fires after using the virtual joysticks when "Use mouse for touch is enabled" when clicking a button
UE - Editor - UI Systems - May 29, 2019Under the following conditions touch release will fire off when clicking a button Use mouse for touch is enabledThe user has recently clicked a virtual joystickThe user then clicks a button ...