Unreal Engine Issues
Unreal Engine Issues
Fail to launch ('Attempt to build nav collision') on device when HLOD is generated
UE - AI - Feb 16, 2017After generating HLOD, game launched from launch on device does not run correctly. 4.14 does not seem to have this issue, so this might be a regression. ...
Child Animation Blueprints Do Not Get Recompiled Correctly
UE - Gameplay - Jan 7, 2020The child of an animation blueprint is not properly recompiled when the it's parent is compiled. Found in 4.24.1 CL#10757647 ...
MaxDrawDistance set by CullDistanceVolume is lost on saving sublevel
UE - World Creation - Worldbuilding Tools - Feb 21, 2025The UpdateCullDistanceVolumes behavior when saving was changed by CL-36588597. Only CullDistanceVolumes in the same sublevel can affect Max Draw Distance. ...
OnRep functions do not fire on the Server when elements are added to an array variable marked as RepNotify
UE - Networking - Mar 17, 2015OnRep functions do not fire on the Server when elements are added to an array variable marked as RepNotify. They do not fire at all when setting an array element with the Set Array Elem node. Proba ...
Refraction not working for some Android devices
UE - Platform - Mobile - Sep 11, 2015Refraction does not work correctly on some Android devices however it works within the mobile previewer, and on iOS devices. Not working on: 5056_GalaxyS5 SM-G900H (ARM Mali-T628 MP6; 4.4.2) Worki ...
Unable to change/edit elements of Blueprint instances of Actor Component set UObject arrays
UE - Gameplay - Components - Nov 20, 2016When an array of custom UObjects is defined in an actor component class, blueprint instances of the component class cannot update the array elements. Array elements only update inside the blueprint ...
Right side of viewport renders black in stereoscopic
UE - Graphics Features - Jan 19, 2017When in VR preview the right eye is solid black. This has been reproduced on multiple machines using both the Oculus and HTC Vive. The same effect is also achieved when running -emulatestereo – ...
SSL certificates for HTTPS are not properly verified on Windows
UE - Online - Feb 7, 2017A user has reported that, due to a change that was made back before 4.12, SSL certificates for HTTPS are not verified correctly when building on Windows. This is due to the change requiring a bundle ...
Transform does not update after first time for Instance Static mesh in Blueprint Editor
UE - Gameplay - Blueprint Editor - Mar 2, 2017In 4.15 When you update the transform of an instance static mesh a second time the editor does not update the location, to get the update to display correctly you must close and re-open the blueprin ...
Add button in Override Materials property is not responding.
Add button in Override Materials property is not responding in Skeletal Mesh > Rendering section in detail panel. This is not responding from 4.15 and above. ...