ViewportFrame does not update in ScrollingFrame within CanvasGroup unless manually updated by scrolling

Bug Reports Engine Bugs
#1

Reproduction Steps

  1. Open the place provided at the bottom.
  2. Press play to start a simulated layout I use in my game.
  3. Wait for the grid to load.
  4. Press “Show Canvas”.
  5. You will notice about half of the viewports do not load.
  6. Scroll down - even a pixel - and you will notice all viewports now load.

Video:

Expected Behavior
I should expect all viewports to be loaded while the canvas is visible.

Actual Behavior
About half of the viewports do not load, resulting in a poor experience, as this is crucial information to show the user in my game.

Issue Area: Engine
Issue Type: Other
Impact: High
Frequency: Constantly

I would also like to note that this occurs with ImageLabels as well, but doesn’t happen as frequently as above.

Place File:
ViewportCanvasRepro.rbxl (64.8 KB)

1 Like
#2

Thanks for the report! We’ll follow up when we have an update for you.

#3

This issue happens with ViewportFrames and VideoFrames as well. CanvasGroups are not properly updating in general.

#4

Follow along here! ViewportFrame does not update in CanvasGroup

#5