Unreal Engine Issues

Issues with ProceduralMeshComponent

Licensee reported issues with ProceduralMeshComponent, which were solved by changing the plugin loading phase from Default to PreDefault. Also reports unspecified issues with running game builds. ...

Chorded Trigger evaluation can be evaluated to unexpected results in some specific cases

Hot Reload not updating variables that have their values set in the constructor

If a variable's value is being set in the construction script of a class and then that value is edited (the line itself is edited, not another setting of the variable), hot reload will not update th ...

Changing default click trace channel in player controller causes widget to not register the mouse

When the default click trace channel is set to something other than ECC_Visibilty, the editor does not take the change into account when determining which channel is being blocked. Download link fo ...

Blueprint Functional Tests Failing When Run Dedicated Server is Enabled

When Run Dedicated Server is enabled, it appears that functional tests are not able to succeed. The following error is appearing in the Automation Test Results: No functional testing script on map ...

Clicking on an Actor in the World Outliner jumps to Details tab if it is docked with the World Outliner

When clicking on a actor in the World Outliner while the Details tab is docked to it, it switches over to the Details tab. This bug was not present in 4.17.2 but is in 4.18 and 4.19. ...

Extreme hitching when using profile command (stat startfile) + other stat commands

Running the "stat startfile" command in a 4.19 project causes constant editor hitching. Running the same command in a 4.18 project does not produce any hitching by comparison. ...

Blueprint Android app installers are named *UE4Game*.bat

In 4.19 blueprint-based apps are named after the project name, but in 4.20 they are all called Install_UE4Game-armv7-es2.bat. This also affects the Uninstall_*.bat ...

Cascade ParticleRelativeTime Outputs Constant 0 on Mobile

Cascade ParticleRelativeTime outputs constant 0 on mobile. Found in 4.19 CL# 4033788, 4.20 CL# 4302132, 4.21 CL# 4321618 ...

Audio: Spatialization: Set Allow Spatialization BP command is not functioning

Reported via AnswerHub on 4.19 and confirmed in Dev-Audio, the Set Allow Spatialization widget in BP appears to not be functioning - as the audio does not become spatialized in playback. ...