When viewing the new UI (structured filters), data may seem incomplete because legacy/invisible filters may still modify the query.
- Make sure you are logged in and RC Filters beta is disabled
- In Preferences/RC, check "Show only edits that may have problems (and hide probably good edits)"
- Enable the RC Filters beta
- In Preferences/RC, notice that "Show only edits that may have problems (and hide probably good edits)" is not available anymore since it doesn't apply to the new UI (requires reload)
- On Special:RC, probably good edits are hidden
Note: there's isReplacedInStructuredUI in the filters definition but it doesn't seem to be used anywhere. Maybe the idea behind this field was to prevent this problem...