We use FloatCurve to create smooth display effects on SurfaceGui’s.
We’ve created an uncopylocked game to reproduce the issue consistently here: FloatCurve Test
You can join this game to see the network error.
The controller is located in ServerScriptService.
No crash or error message
Used for smooth bar displays
As of today’s Roblox patch or feature update, parenting this property to a surfacegui consistently crashes the server.
Player is disconnected shortly after joining with the error "There was a problem receiving data, please reconnect. (error Code: 260) or "this experience is currently unavailable, Please try again later (error Code: 517)
This thread here is what lead to this specific bug report: New servers unable to be created, unable to join
Code used to produce this issue, generating the FloatCurve property:
local ui = script.Parent.UI:Clone() local GUI = ui ui.Parent = workspace.Part local oldPrint = print local print = function(...) oldPrint(...) wait(1) end local GrowthCurve = Instance.new("FloatCurve") print("made float curve") GrowthCurve.Name = "float" print("inserting key") GrowthCurve:InsertKey(FloatCurveKey.new(0, 0, Enum.KeyInterpolationMode.Cubic)) print("inserted key") local middleKey = FloatCurveKey.new(0.5, 0.5, Enum.KeyInterpolationMode.Cubic) print("making another key") middleKey.LeftTangent = 2 middleKey.RightTangent = 2 print("inserting middle key") GrowthCurve:InsertKey(middleKey) print("inserted another key") GrowthCurve:InsertKey(FloatCurveKey.new(1, 1, Enum.KeyInterpolationMode.Cubic)) print("parented to gui") GrowthCurve.Parent = GUI
Issue Area: Engine
Issue Type: Crashing
Impact: Very High
Date First Experienced: 2021-11-10 13:11:00 (+00:00)