Unreal Engine Issues
Unreal Engine Issues
After Seamless Server Travel, the Client cannot move the character or see the Server character
UE - Networking - Jul 9, 2015After Seamless Server Travel, the Client cannot move the character or see the Server character. On the Server, the Client character appears to be falling in place. Tested in both first and third per ...
Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences
UE - Virtual Production - Tools - Take Recorder - Apr 11, 2024Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...
Make Bitmask node returns incorrect value when using custom Enum
UE - Gameplay - Blueprint - Jul 5, 2016When a custom enum is used as the Bitmask Enum of a Make Bitmask node, the value returned does not match the expected value ...
LineTraceSingleByChannel returns a hit for any object it hits, regardless of whether or not that object has the specified collision channel set.
UE - Simulation - Physics - May 5, 2015The collision channel specified in LineTraceSingleByChannel does not appear to be taken into account when the trace is performed. Instead of ignoring any objects that are not set to that channel, an ...
Crash Clicking on Enum in BT Decorators After the Enum Has Been Altered
UE - AI - Apr 5, 2017Clicking on a Behavior Tree decorator that references an Enum blackboard key will crash the editor if that Enum has been altered in the method described in the repro steps. If you set decorators to ...
AbilitySystemComponent::NotifyAbilityEnded Can Crash due to Callbacks Invalidation Specs
UE - Gameplay - Gameplay Ability System - Oct 11, 2023Pasting from the UDN: Unsafe code in AbilitySystem can lead to crash when granting an ability inside OnAbilityEnded Hello. We just ran into a crash. After investigation, it seems to be caused by ...
Player state on clients does not get set properly
UE - Networking - Jul 23, 2015When playing in Standalone with multiple characters there's the the chance that one of the player states does not get set and remains null. This is not a 100% repro case. Multiple tests may be req ...
Camera Movement is laggy while the mouse button is held down and ShowMouseCursor is enabled if there are AI moving
UE - Gameplay - Dec 15, 2015Camera Movement is laggy while the mouse button is held down and ShowMouseCursor is enabled if there are AI moving. Stat Scene Rendering didn't show any jumps while moving the camera under these cir ...
FSlateApplication::OnControllerAnalog triggers a MouseLeftClick event to be added to the input stack.
UE - Gameplay - Input - Jun 3, 2016It appears that FSlateApplication::OnControllerAnalog triggers a left mouse click to occur on mobile platforms. If developers haven't properly avoided hooking up delegates to the InputComponent for ...
Clothing Pops on start and LOD switching
UE - Simulation - Physics - Character - Sep 6, 2018Clothing can have noticeable popping when switching LODs, and there is currently no mechanism to initially start cloth in a resting pose, causing popping on spawn. ...