Unreal Engine Issues
Unreal Engine Issues
Build fails due to potential divide by 0 error
UE - Graphics Features - Sep 29, 2017Shipping builds of the Engine fail when using the Visual Studio 2017 compiler due to a potential divide by 0 error. This is because the TotalColumnSize property of SMemoryStats is set to 0 by defaul ...
Split screen causes rendering issues with lightshafts
UE - Graphics Features - Feb 21, 2018There is an issue occurring where Split screen causes rendering issues with light shafts. This issue does not occur if you use the command " r.lightshaftquality 0" The issue no longer occurs. This i ...
Unreal crashes when you connect scalar node to scalar input, when material function has a vertex interpolator
UE - Graphics Features - Mar 19, 2018There is an issue occurring where Unreal crashes when you connect a scalar node to scalar input when the material function has a vertex interpolator. This issue causes the engine to crash, but the i ...
AIController can't properly unpossess character
UE - AI - Nov 5, 2018There seems to be a bug with the Possess\Unpossess events. Because if you change the last node in "PossessCharacter", which is created in PlayerController(called "PC"), to Unpossess the AI still con ...
USD Stage - Assert !EdgeArray[EdgeID].ConnectedPolygons.Contains(PolygonID)
UE - Editor - Content Pipeline - Import and Export - Nov 19, 2019One of Pixars example .usd files is crashing the editor when importing with 'USD Stage' (KitchenSet imports with no errors) It is possible to import the file via content browser without crashing. ( ...
Asset players in LinkedAnimInstances are ticked twice when a PostProcessAnimInstance is present
OLD - Anim - Apr 14, 2020Reported here: https://udn.unrealengine.com/questions/569091/animation-playrate-in-linkedanimgraph.html I tested with a downloaded copy of 4.24. It looks like this would also happen in 4.25 though. ...
Replacing a UI widget element and then undoing it causes the Widget Blueprint's UI elements to be deleted on editor restart
UE - Editor - UI Systems - Jan 25, 2021When using the Replace With option and then undoing it, upon engine restart the Widget Blueprint's UI components are all removed from the Widget Blueprint. It seems the undo is crucial to the issue, ...
The space between multi line text is gone in game when the text box is placed in a retainer box
UE - Editor - UI Systems - May 4, 2021When using a Text Box with multiple lines inside a Retainer, the lines overlap with each other depending on the letters. It doesn't look this way in the Widget Designer. Additionally, it doesn't loo ...
Pawn's role is incorrect in BeginPlay on client if a multicast RPC is called in BeginPlay on server
UE - Networking - Jun 6, 2022It seems as though calling a multicast RPC during BeginPlay on the server will cause the new actor to finish spawning on the client before applying any initial replicated data, such as the actor's R ...
Merging Splines causes Engine to Crash in 5.1
UE - World Creation - Worldbuilding Tools - Merge Actor - Dec 15, 2022Attempting to merge two spline actors causes the Engine to crash. This issue occurs with the Steps to Reproduce regardless if there are more branches added to the tree branch spline/enabled, and reg ...