I am inspecting changeset 163942334 on OSMCha. It says:
No tags were changed in this changeset.
I don’t think that’s true. I was the one uploading this changeset, and it is supposed to contain removal of contact:website
fields which respond with a 404.
To support that this is indeed what happened in this changeset, I check Version
10 of Way 54643234, a way included in the changeset. It does not have a contact:website
tag. Version 9 does. (And it says Vi fant ikke siden du lette etter, ie we don’t find the page you’re looking for, as expected.)
There is something going on I don’t understand, or this is a bug, I believe. I mainly care because I use OSMCha to double check my work.