A quick test here shows that recently used apps should continue to populate as before on Creators Edition.  If you have it turned off you may find it needs a reboot to start working if you had also turned off the OS option to actually track this information (which is on by default)

Also make sure you are not using anything which 'cleans things' for privacy.  Sometimes they clear those lists too which would obviously stop it working.

I just want to add that I had exactly the same problem. Re-checking the box (and rebooting) fixed the problem, although all of the previous items on my recently-used list were gone.

[update] After a Win10 patch last night the option was once again disabled. Same fix, but something is clearly not working here.

If your list is blank every time you reboot and then rebuilds based on the apps you ran since reboot then something on your computer IS wiping it.  The list is maintained by the Operating System, not Start10.

An application cannot stop another application deleting registry keys especially ones which are not its own.

The most probable cause is something on your computer is for 'privacy' reasons deleting the registry keys that Windows uses to remember the most recently used apps information.  The most common case would be something resetting the OS setting to do not store this (which would make it clear the old data), and utilities which intentionally delete those things.  Tools which delete your browser history might have a similar effect.

It is not normal or expected for the list to be wiped on a reboot.