Unreal Engine Issues
Unreal Engine Issues
Duplicating a blueprint that implements an interface and then removing that interface will cause compile errors that don't occur if the interface was removed from the original BP
UE - Gameplay - Blueprint Editor - Aug 1, 2020See steps to reproduce. Looks like the fixup when saying Yes to "Would you like to transfer the interface functions to be part of your blueprint" doesn't work correctly on the duplicated BP. Inter ...
Fresnel material doesn't display properly in content browser and sometimes weird in material viewport
UE - Rendering Architecture - Materials - Aug 4, 2015When a material is created and saved using the fresnel node, the fresnel effect does not show in the Content Browser thumbnail. Also, when editing the material, zooming in and out with the mouse wh ...
Renaming a BP interface function/event breaks all existing uses of that function/event
UE - Gameplay - May 24, 2018If you rename a blueprint interface function or event that is used somewhere in a blueprint, it will break the usage of that function/event. If it was a function, it will actually delete all the BP ...
default values on a Make Struct pin that has been removed are incorrect
UE - Gameplay - Blueprint - Sep 30, 2015If a user creates a struct, uses a Make Struct node, removes a member from the struct, and then adds the value back in the value will not always be correct. ...
Push Model may prevent actors from going dormant
UE - Networking - Jul 24, 2023This seems to happen because FObjectReplicator::ReadyForDormancy will continually return false while FObjectReplicator::CanSkipUpdate returns true. In ReadyForDormancy, the actor's SendingRepState h ...
Upon editor restart, some Break Struct nodes display a string of letters & numbers
UE - Gameplay - Blueprint - Mar 25, 2015Update: 4/14/2015 Another report of this error: https://answers.unrealengine.com/questions/206466/blueprint-still-dirty-after-compile.html#answer-211801 =========================================== ...
Mouse acts as touch in content browser after alt+tabbing out of a PIE session that contains Virtual Joy Sticks
Tools - Jul 6, 2017If the user alt+tabs out of the editor while using a virtual joy stick in pie, it will cause the mouse to use touch inputs. One example of this would be clicking the content folder which will then t ...
Too large project icon image causes engine to crash
Tools - Apr 27, 2015The engine will crash if you upload a project icon that's way too large for the 192x192 area. It'll also crash when you open that project back up and try to access the project settings ...
Destructible Mesh spawned before static mesh with World or Asset support is not supported
UE - Simulation - Physics - Destruction - Apr 27, 2015When using World Support or Asset Defined Support on a Destructible mesh that is spawned in, if the static world geometry is spawned in after the DM it will not be supported. However, if the static ...
Overriding a struct member field's default value on a BP-added component in a BP asset will no longer allow the user to edit that struct member on instances of that BP's component if the member is deprecated.
UE - Framework - Blueprint - Oct 19, 2023Properties that are deprecated are (incorrectly) not currently being propagated to instances by the duplication logic that we use to instance BP-added components as part of Actor-based BP constructi ...