Search input only allows english language but shows translated titles in popup

Hy peops,

i have a strange problem with the autocomplete input and multilanguage:

i´m able to get translated title from the "entity title translated" field in the autocomplete popup (via node-autocomplete view), but it only allows english terms. Eg. i´m searching for the german term "Fußball" it gives me 0 results on the german version of the page. But if i input the english term "Football" i get on the german site the results (in correct language).

I checked the Views filter and spotted the "Content Revision: title (exposed)". Is that how autocomplete matches the titles? So it actually refers to the "original" english title?

Any idea?