Document pool: fulltext search in templates does not work

In the document pool in the templates you can search for content of the templates. If you search a file you know it is there, you cannot find it as long as you search with the option " Dokumentenpool". As soon if you change the option to "In OpenOLAT" the document is found. 

--> If a file is searched in the templates, which also exists in the templates it should be found directly, without changing the option to "In OpenOLAT"