How to evolve Eevee into Umbreon in Pokemon GO (August 2021)

I'm unsure if this is a bug or not, but I'm looking to evolve my Eevee into Umbreon. I've completed the steps to do so (Buddy, walked 10km) and the silhouette shows

How to evolve Eevee into Flareon, Vaporeon, Jolteon, Espeon, Umbreon, Leafon, Glaceon, and Sylveon in Pokémon Sword and Shield - Dot Esports

Gerald's Umbreon, Your Guide to Eevee and its evolutions Wiki

I named my eevee to evolve it into umbreon, but the evolution button still has a question mark, will it evolve into umbreon if I press evolve? : r/pokemongo

STL file Umbreon - Eevee evolution-POKÉMON FIGURINE - 3D PRINT MODEL 👶・Model to download and 3D print・Cults

How to evolve Umbreon and Espeon using Night and Day in Pokémon GO

Umbreon Espeon Eevee - Obsidian Flames - Pokemon Evolution 3 Card Lot - 086/197-130/197 : Toys & Games

HOW TO EASILY EVOLVE EEVEE INTO UMBREON ON POKEMON SCARLET AND VIOLET

If you haven't used the Eeveelution naming trick, nicknaming Eevee will make the Evolve button show the Eeveelution. (Works for Espeon/Umbreon too) : r/TheSilphRoad

Pokémon Legends Arceus Eevee evolution: How to evolve Eevee into Umbreon, Sylveon, Espeon, Leafeon, Glaceon, Flareon, Vaporeon and Jolteon