Yep, same here. The spellcheck suggestions are basically unusable in certain situations. Right now, it seems that specifically German and German (Germany) are causing the problem for me. As soon as you have either of those in the language list you will only get suggestions for German.
Examples
Dutch, English → Suggestions in both languages
Dutch, German → Suggestions only in German
English, German → Suggestions only in German
Dutch, English, German → Suggestions only in German