11 Jun 2026 · GA4 · low severity · fix verified 9 Sept 2026
Hostname data filter
'New data filter type allows excluding events based on hostname.'
What it breaks
Nothing breaks; a filter applied in testing mode does nothing until activated, and an active filter is not retroactive.
Who it hits: Properties collecting from staging or partner hostnames.
The fix
Use it to drop staging hosts; remember filters are forward-only.
No artifact for this entry — the note above is the whole fix.
Sources linked on every entry · artifacts stamped and re-verified · ← all changes