Query returns no rows in pg_basebackup cluster

["Andrus" <kobruleht2@xxxxxx>]

Hi!

In windows pg_basebackup was used to create base backup from Linux server.
baas column data type is character(8)

In Linux server  query 

select *  from firma1.desktop where baas='_LOGIFAI'

returns 16 rows.

Windows server this query returns 0 rows.

In Windows server same query using like

select *  from firma1.desktop where baas like '_LOGIFAI'

returns properly 16 rows. 

Maybe this is because database locale is not known in windows:

CREATE DATABASE sba
   WITH 
   OWNER = sba_owner
   ENCODING = 'UTF8'
   LC_COLLATE = 'et_EE.UTF-8'
   LC_CTYPE = 'et_EE.UTF-8'
   TABLESPACE = pg_default
   CONNECTION LIMIT = -1;

Correct encoding for windows should be

LC_COLLATE = 'Estonian_Estonia.1257'
LC_CTYPE = 'Estonian_Estonia.1257'

IF so how to to fix windows cluster so that query returns proper result in windows also?
Database in Windows is in read-only (recovery) mode so it cannot changed.
Postgres 12 is used.

Andrus.