Unreal Engine Issues
Unreal Engine Issues
Renaming a level by WorldPartitionRenameDuplicateBuilder fails if the level contains GroupActor with non-spatial actors
UE - World Creation - Worldbuilding Tools - World Partition - Oct 24, 2023Referece to the source level should be fixed by FReplaceObjectRefsArchive, but it is not working because ArIsModifyingWeakAndStrongReferences is not set. It can be fixed by setting the flag.class FR ...
Reimporting a static mesh will cause some values to be reset back to defaults
Tools - Jul 5, 2017Reimporting a static mesh will cause some Static Mesh Editor values to be reset back to defaults. This was reported as JIRA UE-22205 back in 4.10 and was marked fix in 4.12. However, I wasn't able ...
Renaming native struct with redirect can break user defined structs
UE - Gameplay - Blueprint - Jul 18, 2018From https://udn.unrealengine.com/questions/444690/redirecting-ustruct-used-as-member-of-userdefineds.html In 4.20 it was changed so soft object ptrs pointing to classes work correclty with +ClassR ...
Selecting multiple actors with differing DataTableHandles causes data loss
UE - Gameplay - Jan 4, 2021The data table customization (and probably others) tries to aggressively clear out row references that are not valid in the table they point to. This breaks when selecting multiple actors or objects ...
Pressed event triggered after calling FlushPressedKeys while holding the button
UE - Gameplay - Input - Oct 2, 2024This is an issue related to the behavior of the FlushPressedKeys function when called manually while a button is held. Once the function is called in C++, a Pressed event gets triggered even though ...
In -game in Editor, if streaming-in a LevelInstance and initialize its world partition, then leaving that cell and make it go outside the streaming grid, to re-enter it again, will trigger a check(!StreamingPolicy) if no GC has happened during that time.
UE - World Creation - Worldbuilding Tools - World Partition - Jan 27, 2025This crash can be fixed by adding a couple of || IsRunningGame() like it is done here: FGenerateStreamingContext Context = FGenerateStreamingContext() .SetLevelPackagesToGenerate((bIsPIE ...
Editor crashes when entering something in the console
Tools - Apr 10, 2018Setting your language to German and using a German keyboard will crash the editor when typing into the console. This is the keyboard that was used for testing: [Link Removed] ...
"Get Data Table Column as String" Always returns Last Column
UE - Gameplay - Blueprint - Mar 10, 2018The final column of DataTable is always returned when using "Get Data Table Column as String" blueprint node. "Get Data Table Column as String" Blueprint node is new as of 4.19 ...
Meshes simulating physics cannot roll smoothly across multiple connected meshes
UE - Simulation - Physics - Jul 30, 2018A user has reported a physics regression from 4.19 to 4.20 where attempting to roll a static mesh down a slope made of multiple meshes no longer results in a smooth roll. The static mesh will skip a ...
Blueprint with large amount of macros crashes on compile
UE - Gameplay - Blueprint Compiler - Jan 30, 2018Blueprint compile is crashing in a BP with a large number of macros ...