Widget animations queued before Slate creation are not carried out in UE5.8

UE - ACT Character - Sequencer - Sep 24, 2026

We are currently upgrading some of our systems from Unreal 5.6 to Unreal 5.8, and we've noticed an issue with Widget animations. In one of our commonly used actors, a Widget animation is queued in t ...

The editor crashes to Assertion Failed after enabling a light's "Lighting Channels" from the "Light Mixer" panel

UE - CAPT - Tools - Feb 9, 2026

The crash only occurs when enabling the channels of lights that are part of the "BP_SphereLight" or "SM_CubeLight". Enabling the channels of a single "PointLight" or "SpotLight" doesn't crash the ed ...