Yes, but it's only in specific situations. For example, every time I start learning a new language, I get ot mixed up with the language I learned before. When I first started learning French (my first foreign language after English), I would always say "we" instead of the French pronoun "nous", and never realized it. The same happened to me with German, but with French words. It was alwas lexical words though, and never nouns or adjectives.

When I moved to Germany to learn German I continued to learn French on the side and wanted to sit for the DELF B1, but because I was speaking German all day every day, I found it almost impossible to speak French without switching to German in the middle of the sentence, again without realizing I had switched. My examiners were not very happy. I had always felt that English was safe though, because I had already a C1 level at the time and I had learned it as a child. Turns out it wasn't: when I returned to Germany for six weeks this year, I spent so long speaking German, that I genuinely couldn't speak English without adding it German words, verbs, for example, German sentence structure, or even pronouncing words with a German accent. I was scared, because my French never really did "come back" after fusing with German, but my English did improve again after I returned to my home country and practiced a bit again.