Fixed plan.

postgres_derailed_GIN_2.sql

EXPLAIN ANALYZE SELECT id, title  FROM "cards" 
  WHERE (title_tsv @@ to_tsquery( 'english', '(o:*|o)')) AND collection_id = 624::bigint
  LIMIT 10;
                                                                   QUERY PLAN                                                                    
-------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=64.38..103.76 rows=10 width=57) (actual time=70.233..70.250 rows=10 loops=1)
   ->  Bitmap Heap Scan on cards  (cost=64.38..210.07 rows=37 width=57) (actual time=70.231..70.248 rows=10 loops=1)
         Recheck Cond: ((title_tsv @@ '''o'':* | ''o'''::tsquery) AND (collection_id = '624'::bigint))
         Heap Blocks: exact=10
         ->  Bitmap Index Scan on index_examples_fts_with_collection  (cost=0.00..64.37 rows=37 width=0) (actual time=70.204..70.204 rows=131 loops=1)
               Index Cond: ((title_tsv @@ '''o'':* | ''o'''::tsquery) AND (collection_id = '624'::bigint))

Planning time: 3.013 ms
Execution time: 70.718 ms