UI Ghosting/Artifacting from transparent Frames when changing Graphics Quality

Bug Reports Engine Bugs
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1

This is a rendering artifact bug that occurs when changing graphics quality while a complex UI is visible.

The issue is very likely an engine performance/memory bug, not a user script error.

We have confirmed the following:

  • The ScreenGui in question contains over 450 GuiObjects, with heavy use of UICorner and UIStroke.

  • The bug persists even after disabling all custom animation libraries (Spring-driven motion - spr) and all RenderStepped update loops. All scripting causes have been ruled out.

  • The bug does not reproduce in a minimal test place with only a few GuiObjects. It only occurs with the full, complex UI.

This strongly suggests the engine is failing to properly clear the render buffer when reloading a very large number of GuiObjects.

My System Information:
CPU: i7-14700KF
GPU: RTX 4070 Ti
RAM: 64Gb DDR5

Please see the attached video for a demonstration and the private game link for investigation (only for roblox staff the game link).

A private message is associated with this bug report

2

Sorry, but what’s wrong? I don’t really understand even after watching video…

3

Sorry for misunderstanding here a better view of the issue:

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4

i would feel like this would be a problem with your code. but im really not sure how changing graphics quality would prevent code from running

very strange

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5

Are you perchance using a CanvasGroup? It is still pretty unclear what the issue is.

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6

:o is it possible you binded ESC to anything in the UI and the code stopped working

7

Yes each group of my ui use canvasgroup :+1:

8

I don’t have anything binded to ESC :+1:

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9

Yes i was septic about this it was strange and first time i got this but after multiple test same even a simple LocalScript opening one of my frame in my UI doing this issue :confused:

10

Hi @iiNeZoXii thank you for the report. We will add this to our backlog to investigate!

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