Unreal Engine Issues
Unreal Engine Issues
The Editor freezes during PIE when loading a .sav file from 4.7 in a 4.8 or 4.9 project
UE - Gameplay - Jun 24, 2015The Editor freezes during PIE when loading a .sav file from 4.7 in a 4.8 or 4.9 project. The user reporting this reports a memory leak and crash, but I have not been able to reproduce that in partic ...
Enhanced Input Gesture keys (Pinch/Rotate/Flick) never release after touch ends — regression in 5.8
UE - Gameplay - Input - Aug 20, 2026POST LINK: https://forums.unrealengine.com/t/enhanced-input-gesture-keys-pinch-rotate-flick-never-release-after-touch-ends-regression-in-5-8/2745006 POST BODY:Summary An Input Action mapped directl ...
Launcher Crashes after updating from 4.5.1 to 4.6.1
Tools - Mar 9, 2015Launcher Crashes after updating from 4.5.1 to 4.6.1. When opening Launcher user receives the following error message: MachineId:5594134C496ADEDBDA8928BF9C26FCA5 EpicAccountId:7d0bd770cd564683863553 ...
Failed to compile C++ Code project, for iOS/tvOS in Development, in Xcode 8.3 beta 1
UE - Platform - Mobile - Jan 31, 2017Project fails to build for iOS/tvOS due to:error: non-portable path to file errors. ...
Can Ever Affect Navigation Option Being Reset Upon PIE
UE - AI - Mar 29, 2016Upon PIE, the Can Ever Affect Navigation option is being reset on the capsule component of an empty character. Dragging the empty character into the level, setting the option to true, and then playi ...
Unreal 5.7 Trace server not working on Rocky 8
UE - Platform - Linux - Aug 6, 2026UnrealTraceServer built on a Rocky 8 machine yields a binary that depends on versions of glibc and glibcxx higher than the 2.28 version provided by Rocky 8.$ ldd UnrealTraceServer./UnrealTraceServer ...
Sprite sheets cannot be reimported in 4.8 in a project that was converted from an older version
UE - Gameplay - Paper2D - Jun 11, 2015User bug report: Why do you guys remove the Json Importer from UE 4.8? All atlases from TexturePacker can not be imported anymore on our projects. Is there a way to activate it? or maybe is there a ...
Unable to select foliage by left clicking after 1.5 k foliage meshes placed
UE - World Creation - Worldbuilding Tools - Foliage - Aug 28, 2017When using the foliage tool, once the mesh count reaches around 1.5k and higher you will be unable to select individual meshes by using the mouse. The lasso tool and the select all tool work as inte ...
Different Number of Frames imported from the same FBX between UE 4.8 and 4.9
OLD - Anim - Sep 14, 2015Using the same import settings in UE4.8 and UE4.9 will result in a different number of frames of an animation being imported from the same FBX file. If you import the same fbx animation which in M ...
Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc
UE - Gameplay - Blueprint - Sep 1, 2015Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc. This is a regression; does NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2675088) ...