Unreal Engine Issues
Unreal Engine Issues
Nanite TwoSidedSign is backwards
UE - Graphics Features - Nanite - Apr 10, 2025The value of MaterialExpressionTwoSidedSign is flipped when calculating the Opacity Mask for Nanite meshes. This seems to be a regression in 5.5. ...
Chooser Table does not support binding Gameplay Tag properties
UE - Runtime - Animation - Sep 15, 2025When using Chooser Tables, the Gameplay Tag type cannot be bound through the column header UI. Clicking a column header for a different property (ie: bool or float) correctly shows the binding popup ...
Snap to nearest spline point no longer working in 5.6. Right clicking on a spline point and using the option “Snap to nearest spline point" will no longer snap that point to any nearby spline and will sometimes cause the spline to snap to itself.
UE - Gameplay - Oct 22, 2025Context: When editing SplineComponents in the level viewport, right clicking a spline point has a context menu action "Snap to nearest spline point". Problem: The problem is, Snap to nearest spline ...
Replication default setting of child blueprint resets if parent is compiled
UE - Gameplay - Blueprint - Jul 20, 2015The setting for Replication on a Blueprint variable resets to None of the Blueprint's parent BP is compiled. ...
Changing UPROPERTY() settings causes detail components to vanish in editor
Tools - Mar 11, 2015When a UPROPERTY() macro is changed and the recompiled, the hot reload in the editor will cause any BP based on the class to lose certain aspects of the Detail panel such as the actor's transform. ...
Interface cannot be re-implemented after removal from blueprint
UE - Gameplay - Blueprint - Sep 1, 2015If an interface is removed from a blueprint and an interface function is transferred to a local function, the interface cannot be re-implemented in the blueprint. ...
nonstandard bsp additive brushes cause breaking/artifacting on other bsp brushes when colliding
UE - LD & Modeling - Modeling Tools - BSP - May 14, 2015if a nonstandard additive bsp brush collides with a standard additive bsp brush, the surfaces of the bsps break and artifact, causing numerous holes in the brushes. ...
UMG widgets aren't cleared when levels are swapped via 'open LevelName'.
UE - Editor - UI Systems - Oct 30, 2014If a level has UMG widgets, swapping to other levels (including the level you're already on) doesn't clear away the UMG widgets. ...
Construction Script fires multiple times when the Const Script is compiled
UE - Gameplay - Blueprint - Apr 30, 2015Construction Script fires multiple times when the Const Script is compiled. If the character is moved on the grid in the level, it will only fire once. It only seems to be an issue on bp compile. ...
Planar Reflection seems to render inverted
UE - Platform - Mobile - Jul 6, 2016Planar Reflections seem to be inverted on mobile devices. The angles seem to be off too. ...