It seems that my question might resemble some already posed, but I'll ask anyway…
I'm a non-EU citizen living in Germany and working for a German Corporation. I'm a EU Blue Card holder with over 24 months legal residence in the country.
Due to certain personal challenges, I'll need to be present in another two EU countries. One is a non-Eurozone and the other is. The total timeframe is up to 90 days.
Would there be any legal or tax implications given that I can stay up to 12 months in another non-EU country without losing status? My residential address will be in Germany during that time, and nothing practically will change.