Unreal Engine Issues
Unreal Engine Issues
Adding a widget to a grid panel inside the grid panel tick can cause an out-of-bounds error
UE - Editor - UI Systems - Slate - Jan 25, 2021This is caused by adding an item to a grid panel inside the grid panel iteration loop. The same operation to canvas panel goes well without any errors. The difference is that the array iteration in ...
Fix AGameModeBase::GetGameSessionClass
UE - Gameplay - Dec 5, 2016AGameModeBase::GetGameSessionClass wasn't properly returning the set GameSessionClass. ...
Crash after converting to 4.7.0 from 4.6.1
UE - Gameplay - Blueprint - Feb 26, 2015User is crashing when opening project after converting to 4.7. [Link Removed] [Link Removed] LOG IS ATTACHED 4.6 project with updated plugin: [Link Removed] ...
Sequencer autosorts alphabetically on undo
UE - Anim - Sequencer - Sep 8, 2023[Link Removed] Jan Kaluza 2023-09-08 15:37:18 UTC I just ran into a very frustrating bug: I have around 60 actors in a sequence, and I reordered them to be in the order that I wanted to animate them ...
BP using nested child actor components in streaming level causes ensure condition failed
UE - Simulation - Core - Jul 11, 2022This never happens on ue5.0.0 The problem appears to be caused by a deleted PhysicsProxy being registered with Solver. Since the solver accesses the deleted PhysicsProxy, it may crash. Checking a ...
Can perform infinite "double jumps" when JumpMaxHoldTime is greater than 0.
UE - Gameplay - Player Movement - Jun 3, 2016There's a bit of broken (or missing) logic in ACharacter that doesn't account for users having released the jump button. This is a well known issue, and there's even video's describing how users can ...
FileSystemDerivedDataBackend may output a corrupted access log
UE - Foundation - Core - Derived Data - May 20, 2021This problem is caused by the AccessLogWriter has not been flushed at the termination. The following workaround flushes the Writer.class FFileSystemDerivedDataBackend : public FDerivedDataBackendInt ...
[CrashReport] Assertion failed: OLEReferenceCount == 0 in UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private()
UE - Editor - UI Systems - Slate - Aug 22, 2017This is a regular and longstanding crash in 4.17 that has occurred since at least 4.14. Users have not provided any descriptions of their actions when the crash occurred. There has been some previo ...
ensure(PinHelpers::UnresolvedPins.Num() == 0); fails after undoing in the editor
UE - Framework - Blueprint Editor - Sep 6, 2025The underlying cause is some edge case involving a math expression node, which does some perhaps naive things with a contained graph. ...
Skeletal mesh LOD 0 "LOD Info" loose their settings when we reimport
UE - Editor - Content Pipeline - Import and Export - Mar 6, 2020Set critical because loosing settings is dangerous. This is not a regression, the bug is in 4.22 and earlier version. We have to save all options of the LODInfo, currently nothing is saved. Also sh ...