Items are not appearing in Summoner's Rift

When in the Item Set section, the following items do NOT appear to be restricted to Summoner's Rift, but when in-game, the items do not appear as an option:

Character used: Mordekaiser

• Wooglet's witchcap - Only says not available in Howling Abyss
• Moonflair Spellblade - Only says not available in Howling Abyss