Unreal Engine Issues
Unreal Engine Issues
Remove Item Node Removes All Objects in an Array
UE - Gameplay - Blueprint - Nov 9, 2015Getting an object from an array at a certain index and then using the Remove Item node causes the entire array to be wiped. Found in 4.10 Preview 4. Reproduced in 4.9.2 binary and Main CL 2752291. ...
Sublevel moves away when undoing the level visibility change
Tools - Nov 21, 2016When you have a sub level with some level transform, changing its visibility then doing undo makes the sub level moved away as if the level transform applied twice. I could repro the issue in 4.13. ...
Applying downscale causes textures to display unexpectedly on widgets
UE - AI Workflows - UI Systems - Slate - Sep 22, 2025When applying downScale 2.0 to UI textures to reduce resolution, unintended display issues occur on widgets, such as: ・The border of box-shaped Widgets with DrawAs set to “Box” becomes thinner ・Dot ...
ShowDebug Overlapping Text
Tools - Apr 27, 2016Using the showdebug commands during play results in overlapping text that is difficult to read. Found in 4.11.2 binary. Reproduced in 4.10.4 binary and Main CL 2852833. Regression? No, also occ ...
Gameplay Debugger Won't Open When Using US International Keyboard Settings
UE - Gameplay - Input - Nov 23, 2015Using a keyboard with US International settings prevents the gameplay debugger from being opened when using the apostrophe key. Potentially a similar issue to [Link Removed]. Found in 4.10 binary. ...
MediaFramework movies not playing properly in Shipping
Media Framework - Nov 7, 2017`check(Samples.Pop());` this kind of `Pop()` inside of a `check()` is in a few places in MediaSampleQueue.h and MediaSamples.cpp but `check()` expands to nothing in Shipping/Test, so, required work ...
Pick New sprite option becomes unavailable if you change the view options
Tools - Jan 4, 2018The Pick New sprite option becomes unavailable if you change the view options to either tile or column when working with the keyframes of a 2D animation. This issue affects the project indefinitely ...
NavLink component does not account for the cost of the path set by AreaClass
UE - AI - Sep 6, 2018In the test case, the NavLink component has a navigation cost of 1000000000. When the AI navigates to the NavLink the printed cost is only 2677. It is believed that the AreaClass isn't being taken i ...
Data validation FAILED due to IWBE_Blutility containing invalid data
UE - Content - Engine - Jan 11, 20214.26[AssetLog] D:\Binary\UE_4.26\Engine\Content\Tutorial\InWorldBlueprintEditing\TutorialAssets\IWBE_Blutility.uasset: Default__IWBE_Blutility_C is not valid. See the MapCheck log messages for detai ...
Assets on paths with speed parameters are sped up in Path Tracer exports
TM - Rendering - Jul 18, 2025Reported in SF [Link Removed] In Path Tracer renders, all paths with a speed component (vehicles, bicycles, custom) will render at an increased speed than specified in the exported render. This is ...