When did you update? This should have been fixed at 12:36 today. Any updates after that point should include the start.elf file.
Are you using berryboot or some other custom kernel?*** Backing up modules 4.14.83v7-aufs
Nope. Minor kernel bumps rarely cause issues so you shouldn't expect a problem, but there are rare exceptions.
cgroups was disabled to avoid the memory leak (reported here).