Unreal Engine Issues
Unreal Engine Issues
Niagara - The "Apply" button on the toolbar does not get enabled when changing the checked state of an entry in "Propagated Static Switch Values" for a function call node.
UE - Niagara - Apr 7, 2025Consider a Niagara Function Script containing a Static Switch node with the "Expose as Pin" option disabled for its selector variable. Now consider another Niagara Function Script or Module Script ...
FName no longer equals FName_None when constructed with a trailing underscore and digits in range of 1-9
UE - Core - Systems - Apr 15, 2025When an FName is created with a trailing underscore and any number of digits in the range of 1-9 the trailing digits are used as the internal number value for the FName lookup. This results in the F ...
Editor crashes when changing skeletal mesh if another skeletal mesh component is attached when using master pose node
OLD - Anim - Jan 27, 2020The crash only occurs if the additional skeletal mesh component is used with Set Master Pose Component (see ToggleAttach function in the TopDownCharacter BP). It doesn't seem to matter what mesh we' ...
Clients Joining a session destroy and recreate all actors in the level upon joining
UE - Networking - Apr 28, 2015When a new client joins a server all of the actors will be replaced with new copies of themselves. This will cause things like the construction script and event begin play nodes to fire off every ti ...
Arrow component's size appears to reset to default when moving the actor in the scene
UE - Gameplay - Blueprint - Jun 21, 2017If an Arrow component's size is set in the construction script via the "Arrow Size" node it will be set correctly upon compile. However, if the actor is moved in the scene the size of the arrow will ...
Dynamic input scripts crash when removing IF node's Pin and recreating it
UE - Niagara - Dec 19, 2018This seems to happen with other NiagaraScript. According to Licensee, when this operation is done, it seems that the ID of the parameter is incorrect. ...
Setting child actor component offset breaks child component variables set in parent constructor
UE - Gameplay - Blueprint - Sep 6, 2016If a child actor component has a local offset from the parent, any of the child's variables that are set in the parent's construction script are not registered. Workaround: Setting child variables ...
Compilation errors in Shallow Water contents example's Niagara module script
UE - Niagara - Oct 14, 2022This seems to be because the ModuleUsageBitmask is hardcoded as Particle. Sig.ModuleUsageBitmask = ENiagaraScriptUsageMask::Particle; UNiagaraDataInterfaceGrid2DCollection::GetFunction { ... ...
ExposeOnSpawn Class properties do not respect "none" as the value on "Construct object from class" node
UE - Gameplay - Blueprint - Mar 21, 2024I think that the root of the issue actually comes from the K2 node behavior itself. If you copy your node and paste it to a clipboard, you can see the pins and the string representation of all the v ...
TVOS - Adding Game Center image assets causes build script error
UE - Platform - Mobile - Nov 25, 2019"We are trying to add required Game Center assets to our Apple TV project. We are using the source code version of UE4. It seems that the editor UI does not support adding the Game Center leaderboar ...