I recently got the question how sticky bit and SELinux play together. I only found this one site about Linux Permissions on Fedora
Are there any other concerns using sticky bits and SELinux together?
SELinux just prohibits some operations that the "standard Unix" permission model would allow. The sticky bit on a directory means that only the owner of a file in it can fiddle with it. On files the sticky bit hasn't meant anything for almost as long as memory serves.