Some criteria are missing when indexes are used on the source tables

CREATE TABLE "pg"."tx1"  
(  
   a varchar(2147483647),  
   b varchar(2147483647),  
   c integer,  
   d integer,  
   e integer  
);  
CREATE INDEX tx1_b ON "pg"."tx1"(b);  
CREATE INDEX tx1_a ON "pg"."tx1"(a);  
CREATE INDEX tx1_e ON "pg"."tx1"(e);  
CREATE INDEX tx1_d ON "pg"."tx1"(d);  
CREATE INDEX tx1_c ON "pg"."tx1"(c);  
  
CREATE TABLE "my"."tx2"  
(  
   a integer,  
   b integer,  
   c integer,  
   d integer,  
   e integer  
);

insert into tx1 VALUES(1,1,1,1,1) ;  
insert into tx1 VALUES(1,2,2,2,2) ;  
insert into tx1 VALUES(1,2,3,3,3) ;  
insert into tx1 VALUES(1,2,3,4,4) ;  
insert into tx1 VALUES(1,2,3,4,5) ;  

insert into tx2 VALUES(1,2,3,4,5) ; 

select tx1.* from pg.tx1 as tx1 join my.tx2 as tx2 on tx1.a=tx2.a and tx1.b=tx2.b and tx1.c=tx2.c and tx1.d=tx2.d and tx1.e!=tx2.e;