Description

Umber's position can also be (47.7,39.7) not just (44.7,35.5). he walks between two buildings according to wowhead. I only saw him standing at 47.7,39.7
There is a followup quest, that also has him as a questgiver, again at the other location,

Wowhead link

https://classic.wowhead.com/quest=6844/umber-archivist

Screenshots

Questie version

5.10.1