Unreal Engine Issues
Unreal Engine Issues
Delta struct serialized fast arrays replicating new elements with no changelist
UE - Networking - Jun 14, 2021There is a scenario where delta struct serialized fast arrays can replicate changes that introduce additional elements to the array, but without changelists containing the new data. This needs furt ...
A Client connected to a Server that then destroys the session and rejoins will be disconnected after a short time
UE - Networking - Dec 8, 2015A Client connected to a Server that then destroys the session and rejoins will be disconnected after a short time. Unable to reproduce in a new project, however this has been reported multiple times ...
VT Lightmaps render different results and no shadows
UE - Graphics Features - May 21, 2020VT Lighmaps don't have the same results as the regular lightmap counterpart and don;t render shadows. https://udn.unrealengine.com/questions/578318/lightmaps-different-after-switching-to-virtual- ...
Cannot compile nativized Blueprints containing a delegate signature that includes a TMap (paired) type as a parameter.
UE - Gameplay - Blueprint - May 15, 2018Paired types (e.g. TMap) in a delegate signature do not compile after nativizing a Blueprint class containing it due to the macro expansion and comma inside the template spec between key and value t ...
Negative Play rate in an Anim Sequence added to a Montage Causes timeline to collapse
OLD - Anim - Jan 14, 2015Adding animations with a negative play rate (playing backwards) or modifying existing animations in a montage to have a negative play rate causes the timeline in the montage to "squish" and is no lo ...
[CrashReport] D3D device lost. (Error: 0x887A0007 - 'RESET')
UE - Graphics Features - Dec 1, 2017This is a common 4.18 crash that occurs before projects load. All cases experience the "RESET" error. Possibly just driver issues? Source Context 188 // Workaround for the fact that i ...
Procedural Mesh generated on BeginPlay does not collide with sweep actors in a packaged game
UE - Gameplay - Nov 10, 2016If a Procedural Mesh is created on BeginPlay (at runtime) instead of in the Construction Script, collision with non-player objects does not register correctly in packaged or launched games. This wor ...
FArchive broke operator<< for bool in Editor builds
UE - Foundation - Core - Feb 16, 2017Looks like CL-3215392 added changes in FArchive where the operator<< method for bool is a member operator in Editor (as opposed to a global operator in non-editor and old builds). This causes shado ...
Net Cull Distance does not work with Pawn only Character
UE - Gameplay - Player Movement - May 4, 2015Licensee also posted on Asnwerhub here, https://answers.unrealengine.com/questions/220787/bug-net-cull-distance-doesnt-work-when-the-player.html Also Reproduced in Main Promotable-CL-2535351 & Rele ...
Overridden Lightmap Resolution in Sample Projects are too high
Docs - Samples - May 11, 2015Starting with 4.7 and when we changed the BSP blocks in Sample Content to Static Meshes, a significant minority of lower end PC users are getting soft crashes (freezes and rebooting required to cont ...