UseStrafingAnimations disables each time I close Studio, and can't seem to enable it by code

Help and Feedback Scripting Support
1

Each time I start Roblox Studio, UseStrafingAnimations located as a checkbox in Players in the Explorer is disabled.

I have to enable it manually each time and it disables itself when I close Roblox Studio.

When I try to access by code: game:GetService(“Players”).UseStrafingAnimations = true
I get this error: UseStrafingAnimations is not a valid member of Players “Players”

Any ideas?