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Won't Fix

Votes

0

Found in

2017.4.0f1

2017.4.20f2

2018.3.0a1

2019.1.0a1

2019.2.0a1

Issue ID

1136993

Regression

No

GUILayout.Window never releases old windows which causes a memory leak

IMGUI

-

How to reproduce:
1. Open the attached project "GUILayoutWindowMemLeak.zip" and scene "TestScene"
2. Enter Play Mode
3. Observe the Profiler Window's memory summary

Expected result: the memory used by mono and unity does not continue to increase over time indefinitely (as seen in the profiler's memory summary)
Actual result: used memory increases indefinitely (0.5GB for mono after ~40 minutes)

Reproducible with: 2017.4.24f1, 2018.3.10f1, 2019.1.0b8, 2019.2.0a9

Note: the demo uses windows with different IDs every frame

  1. Resolution Note (2019.3.X):

    low priority defects for the moment and unlikely to be fixed for the moment. it's staying in our DB.

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Comments (2)

  1. B16B0SS

    Nov 11, 2021 13:02

    We use a third party tool that makes heavy use of GUILayout.Window to render a canvas. Needless to say, this issue is a problem for us as our computers run out of memory withing a days work. Would be nice for it to be fixed or would like to know of a workaround as this low-priority issue causes a loss of time for us on a daily basis.

  2. LT23Live

    Sep 16, 2021 15:02

    I am also receiving this issue for Unity 2020.3.12 LTS and my coworker reported this with Unity 2020.3.16 LTS. This is really bad for making custom editor windows.

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