Unreal Engine Issues
Unreal Engine Issues
Post increment operator is not overridden for data structure iteration
UE - Foundation - Core - Mar 21, 2017Attempting to use a post increment operator in a TMap or TSet iterator will fail to compile with error shown in callstack field. This is due to the post-increment operator not being overridden in M ...
Actor Not Ticking on First Streaming Level Load When Using Level Streaming Volume
UE - Gameplay - Apr 11, 2017Actor's do not appear to be ticking when a level is first loaded when using a Level Streaming Volume. The Tick event will fire on the second and subsequent attempts. Edit: After further testing, th ...
Lighting build fail due to failing to open channel for material data
UE - Graphics Features - Apr 21, 2017Licensee reports lighting build fails for their specific levels which were created in 4.14.1 then moved to 4.15.1. Workaround: Setting LogLightmassSolver verbose level to Warning can show "Warning ...
material clamps with Panner for HTML5 when texture size is not power of two
UE - Platform - Mobile - Apr 25, 2017When launching for HTML 5 and using a texture or image that is not a power of two in size the texture does not pan correctly, instead of panning as expected, the material clamps and will remain that ...
Code Projects do not upgrade cleanly to 4.16
UE - Foundation - Core - May 4, 2017When using the "Switch Engine Version" option in the uproject's right click menu to change a project's engine association, switching to 4.16 and attempting to launch the project forces the project t ...
Full Screen Native Resolution not supported on new iPad Pro 11-inch and iPad Pro 12.9 inch (3rd generation)
UE - Platform - Mobile - Nov 16, 2018A licensee has reported that Full Screen native resolution does not work properly on the iPad Pro 11-inch and on the iPad Pro 12.9-inch (3rd generation). Black borders are used around the screen ins ...
Packaging that involves a compilation process causes custom icons to not show in the taskbar on Windows in Binary
UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 30, 2018Packaging that involves a comilation process in the Binary editor causes custom Windows icons to be ignored in packaged games. This could either be seen in a Code project or in a Blueprint Only proj ...
Internal Compiler Error: Tried to create a property Crash in scope Beta_C, but another object (ObjectProperty /Game/Alpha.Alpha_C:Crash) already exists there.
UE - Gameplay - Blueprint - Oct 31, 2019After fixing the crash from [Link Removed] when compiling the child blueprint that has claimed the component name the parent was previously using without having compiled the parent, an internal comp ...
FScriptMapHelper::HasKey() and FScriptSetHelper::HasElement() fail on new keys with a substring of another key
UE - Editor - Verse Class Editor - Jan 27, 2022Duplicate key checking in maps and sets in the editor is done via calls to FScriptMapHelper::HasKey() and FScriptSetHelper::HasElement(), but this code is checking for object names which are subsets ...
CopyFileUnderSourceControl Fails on Already Resolved Files
UE - Editor - Apr 12, 2023CopyFileUnderSourceControl has instances when the response is not a success even though the files are copied successfully under source control. It seems FPerforceCopyWorker::Execute() tries to reso ...