The "KL05 Sub-Family Reference Manual" section on LLWU is really hard to interpret because of a search&replace gone wrong:
All LLWU registers are reset by Chip Reset not VLLS and by reset types that trigger Chip Reset not VLLS. Each register's displayed reset value represents this subset of reset types. LLWU registers are unaffected by reset types that do not trigger Chip Reset not VLLS.
More generally, where and how does one report such problems?