SQL-Query gets double columns

SELECT [strg_1] FROM [au2matorStaging].[dbo].[TC_Basetable] where [strg_1] = 'Testeintrag 08'

Press "save" an test it. You will get a Popup with the right data.
If you enter the Service-Editmode for this service again and only press "Apply" and the test ist again. The Query will not work and shows this:
If you look in the [au2mator].[dbo].[RunbookParameterMappings] - Column "ViewSqlQuery"
you will see that the select colums have been extended.
It seems, that if the column name appears after the "Select" and also appears at the end of the "where" clause, pressing "Apply" (in edit mode) will add it again at the beginning of the "Select" clause!
I hope you can reproduce the problem
Ewald