INDEX MATCH MATCH Dynamic Named Lists

I have a table with HTML data, that I want to search with Full Text Index via an html-filter

So I created an index:

CREATE FULLTEXT CATALOG myCatalog AS DEFAULT

CREATE FULLTEXT INDEX ON myTable (Body TYPE COLUMN Filetype)
                        KEY INDEX PK_myTable

Body is a varbinary(max) column with HTML. The Filetype column is a computed column always returns ".html".

No results are being returned.

I verified that .html filter is installed. FullText index is also installed properly and works fine if I convert the column to nvarchar and create just a "plain text" index (not html).

No errors in the SQL log or FTS log.

The keywords table is just empty!

SELECT *
FROM sys.dm_fts_index_keywords(DB_ID('myDatabase'), OBJECT_ID('myTable'))

All it returns is "END OF FILE" symbol.

It says "document count 35" which mean the documents were processed, but no keywords were extracted.

PS. I have SQL Server Express Edition 2012. Asked my coworker to test this on SQL Express 2016 - same result... Tried on our 2016 developer edition - same result! All different machines. What am I doing wrong?