Unreal Engine Issues
Unreal Engine Issues
Hot Reload wipes all elements of UProperty TArrays in Blueprint subclasses
UE - Foundation - Cpp Tools - Hot Reload - Dec 5, 2017Hot reloading a change that affects a class that contains a TArray UProperty will wipe all of the array elements of any Blueprint subclasses of that class. Regression?: Yes This does not occur in 4 ...
Using ServerTravel <MapName> command with Seamless travel causes level blueprint logic to not run on client
UE - Networking - Jan 14, 2020When calling the ServerTravel command when using seamless travel, level blueprint logic is not being run on the client side. NOTE: Adding a small delay (tested with .2 to 2 seconds) after the "B ...
Naming an Event Dispatcher the Same as an Overridable Function Corrupts the Event Dispatcher
UE - Gameplay - Blueprint - Oct 21, 2015Creating an event dispatcher in a widget blueprint with the name OnDrop, which is already an existing overridable function, causes the event dispatcher to become corrupted and prevents it from being ...
Node comments do not save if deselected with mouse as opposed to pressing Enter to end/commit comment.
UE - Gameplay - Blueprint - Jun 27, 2016Node comments do not save if a blueprint is closed and re-opened when the comment is ended by using LMB on the event graph as opposed to pressing Enter. Regression (no) issue (does) occur in 4.11. ...
Rendered panoramas using Lumen may be overexposed
TM - Rendering - Sep 30, 2025Reported in SF [Link Removed] Lumen Panorama renders in 2025.2 may appear overexposed compared to the viewport, or when comparing the same render produced in 2025.1.1 This only appears to occur wi ...
Animations are stuttering in Game Preview Server window
UE - Networking - Jul 27, 2018When 'Run Dedicated Server' is unchecked and you run PIE with 2 or more clients, all client's animations are stuttering on Game Preview Server window. This does not happen when Run Dedicated Server ...
Value for how long jump key is held is not updating while PIE and max jump count is 0
UE - Gameplay - Apr 14, 2017I'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 ...
Adding Angular Impulse on Begin Play causes a Crash
UE - Simulation - Physics - Jun 29, 2016Calling Add Angular Impulse on BeginPlay causes the editor to crash. Workaround: Adding a short (.01s) delay after BeginPlay prevents the crash. Regression: No, crash occurs in 4.11.2 as well. ...
VR Editor Taking Input From Wrong Controller in Foliage Painting.
UE - Editor - Workflow Systems - Nov 2, 2016When in Foliage Painting mode, the left trigger press causes the right controller to paint foliage instead of the left controller. This bug does not affect Landscaping or Mesh Painting. This is a r ...
Landscape tool does not work correctly in OSX 10.12
UE - Graphics Features - Oct 26, 2016The landscape tool is not working correctly in OSX Sierra 10.12 This could not be reproduced in El Capitan 10.11.6 on a similar iMac or on Windows Not a regression as it occurs in 4.13.2 as well ...