TYPO3 Core

I have a page with two languages (0 = english, 1 = german). All categories are set to "All languages". The categories are used on Pages or/and Content Elements

10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
table = sys_category
selectFields = uid
pidInList = 3
join = sys_category_record_mm ON sys_category.uid = sys_category_record_mm.uid_local
where = (tablenames = 'tt_content' AND sys_category_record_mm.uid_foreign = {field:uid})
where.insertData = 1
as = cats
}

On the default page I get an array of the selected categories. On the german page the query on the database gets the right selected categories but the result gets afterwards killed by the language overlay resulting in an empty array for the german page.

Using "languageField = 0" has only effect on default language.