Unreal Engine Issues
Unreal Engine Issues
Warning spam when binding the "Frame" property of the HeterogeneousVolumeComponent on the Sequencer
UE - Niagara - Cinematics - Jan 24, 2024I think it doesn't like the "bPlaying == false" expression for the EditCondition meta tag on the UPROPERTY... You also get these warnings every single time the Sequencer plays through a keyframe on ...
Regression: "Play particle effect" anim notifies are not seen in the editor playing level sequence/matinee when Attached is set to false
UE - Graphics Features - Dec 21, 2017Not Attached particle system is not seen in the viewport of the editor. This particle will be seen normally when PIE. Regression? Yes. This issue is not reproduced in 4.17 version. You can simply ...
Level sequence does not play when using async load for level
UE - Anim - Sequencer - Jul 25, 2022The problem seems to be that FLevelSequenceBindingReference::Resolve () fails due to LoadPackageAsync() called in the FStreamableManager::StreamInternal() function. The licensee reports that the pro ...
Unable to Play Sequence in PIE when changing levels in C++ with ClientTravel()
UE - Anim - Sequencer - Oct 25, 2018Changing levels with ClientTravel() breaks ability to activate sequence. Client Travel API: [Link Removed] Confirmed in 4.22 MAIN at CL 4503321 ...
Tab key doesn't go to next value field in sequencer tracks (i.e. XYZ)
UE - Anim - Sequencer - Jun 10, 2016Tab doesn't go to next value field in sequencer tracks (i.e. XYZ) ...
Importing Camera FBX into a sequence can crash with a headless editor
UE - Anim - Sequencer - Mar 19, 2021In a headless editor instance we will not be able to send toasts to the user, and we should not notify slate. The Sequencer Tools function library calls MovieSceneToolHelpers::ImportFBXCameraToExist ...
Client and server can both get stuck waiting for packet sequence history flush
UE - Networking - Sep 4, 2025The issue occurs when both instances have a significant difference between their last sent and last ack'd sequence number, as they will begin waiting for the sequence history to be flushed for a pac ...
Using a Sequencer event track to set playback position to a time before the event will cause an infinite loop
UE - Anim - Sequencer - Nov 10, 2017Creating a Sequence with an event track that calls SetPlaybackPosition to a time prior to the event key will cause a crash 100% of the time. This will occur even if the event is set up to only fire ...
Using the Transform Tool to manipulate multiple Event Trigger keys at different times in the Sequencer Curve graph sometimes causes crash
UE - Anim - Sequencer - Dec 8, 2021This is not a regression. I was able to reproduce the crash in 4.26. Using the transform tool to manipulate keys for an Event Trigger within the curve editor of sequencer sometimes causes it to cra ...
Accessed None for Sequence Actor references in project upgraded to 4.17
UE - Anim - Sequencer - Jul 14, 2017In a project upgraded from 4.16 to 4.17, the level sequence doesn't play on first PIE and returns Accessed None errors. Next time you PIE, it plays fine. This now happens every time you re-open th ...