MPC Parameter inside a sequence creates a key that doesnt respect the selected key type

Summary

MPC Parameter inside a sequence creates a key that doesnt respect the selected key type. 100% repro.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

UI/Tools

Steps to Reproduce

Create a material parameter collection and add a scalar to it.
Create a level sequence
Drag the MPC from content browser to the sequence editor
On the sequence set the default key interpolation to “Constant” (button is a diamond on the interface of the level sequence). This makes it so that all keys added to the sequence are constant (square icon)
Press the + on the material parameter collection to add a parameter and select the scalar you made

Expected Result

A key is added to the sequence and it has constant interpolation (square icon)

Observed Result

A key is added to the sequence and it has Cubic Smart Auto interpolation.

Platform(s)

pc