Reproduction Steps
We use FloatCurve to create smooth display effects on SurfaceGui’s.
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We’ve created an uncopylocked game to reproduce the issue consistently here: FloatCurve Test
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You can join this game to see the network error.
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The controller is located in ServerScriptService.
Expected Behavior
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No crash or error message
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Used for smooth bar displays
Actual Behavior
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
Frequency: Constantly
Date First Experienced: 2021-11-10 13:11:00 (+00:00)