Level cannot save when compile setting is changed on blueprint present in level

UE - Gameplay - Blueprint - Aug 21, 2017

When using a project that has a blueprint in a level when the project is created, there is an issue that is occurring when you modify the compile settings and attempt to save the level There is an e ...

Crash when travelling during ability activation when URL contains "#"

UE - Framework - Jul 18, 2025

This issue is related to [Link Removed], where the "?listen" option sent on the URL to clients could cause issues with RPCs being called locally during travel. The fix to remove the "?listen" option ...

Paint Mode button options disappear when toggling on "Use Small Tool Bar Icons" in the User Interface

Tools - Nov 30, 2017

When toggling on the "Use Small Tool Bar Icons" under the User Interface settings, the button options that sit directly under the Colors, Weights, and Textures options in Paint mode disappear. Thi ...

Value for how long jump key is held is not updating while PIE and max jump count is 0

UE - Gameplay - Apr 14, 2017

I'm at a loss for what is going on here. This was observered while working through the first 2 steps of UEQAT-2780 (JumpTest.PNG shows those steps). This works in 4.15.2, but not in 4.16. If you cha ...

Crash occurs while clicking through the Landscape Overview Tutorial

Tools - Apr 28, 2017

Crash occurs while progressing through the Landscape Overview tutorial, after the step "After pressing the Create Button, your level should now have a Landscape Actor inside of it" This is a regres ...

Crash when loading the tutorials for 'Landscape Painting Mode' and 'Landscape Sculpting Mode'

Tools - Jun 6, 2017

A crash occurs when starting either the Landscape Painting Mode or Landscape Sculpting Mode tutorials. It crashes even if a landscape is already in the level. This is similar to [Link Removed], h ...

Physics objects will bounce unrealistically just before coming to rest

OLD - Anim - Jun 5, 2017

Physics objects will bounce unrealistically just before coming to rest. This is most noticeable with the large cube in the 1st Person template project. It also happens with the smaller cubes but not ...

Fbx importer can import valid under 30Hz anim at 30Hz

Tools - Jul 17, 2017

The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...

Surface Profile Skin shading has some unexpected stripe rendering issues

UE - Graphics Features - Apr 3, 2018

So it looks like the artifact is definitely related to whether sss checkboard is enabled, but I can't reproduce it if enabling checkboard right after open the map, I mean it has to be reproduced aft ...

Incorrect Lumen Scene direct lighting when objects behind masked landscape

UE - Graphics Features - Lumen - Oct 5, 2025

When objects are placed behind or beneath a masked landscape and r.Lumen.HardwareRayTracing.SurfaceCacheAlphaMasking is enabled, the direct light evaluation is incorrect. There are two workarounds, ...