parse_constraint_name extracted table-name segments as field names for multi-word tables: for a table named changelog_entry, the primary key constraint changelog_entry_pkey was split into ["changelog", "entry", "pkey"] and the middle part "entry" was returned as a field name, producing a spurious "Field 'entry' value is already taken" error on every INSERT. Constraints ending in _pkey or _fkey now return None immediately, so primary key and foreign key violations fall through to the generic error message instead.
Fixed — runique (admin)
Admin sidebar filters were not cumulative: clicking a filter value in one column silently discarded active filters from other columns, because each filter link only included its own filter_col=val parameter. Links in list_partial.html now iterate over active_filters and preserve every other active column filter in the generated URL, both for value selection and for the per-column clear (✕) link.