[code=plaintext]recreate table test(id int, s varchar(1) character set utf8 collate unicode_ci_ai);
commit;
insert into test(id, s) values(1,'Á');
insert into test(id, s) values(2,'á');
insert into test(id, s) values(3,'á');
insert into test(id, s) values(4,'Á');
insert into test(id, s) values(5,'Á');
insert into test(id, s) values(6,'á');
commit;
select * from test order by s collate unicode_ci_ai;

WI-V2.5.5.26872:
          ID S      
============ ====== 
           1 Á     
           4 Á     
           5 Á     
           2 á     
           3 á     
           6 á 

WI-T3.0.0.31852:
          ID S      
============ ====== 
           2 á     
           3 á     
           6 á     
           1 Á     
           4 Á     
           5 Á 

id = 1,4,5 : LATIN CAPITAL LETTER A WITH ACUTE, U+00C1
id = 2,3,6 : LATIN SMALL LETTER A WITH ACUTE, U+00E1