Actually, neither Studentinnen nor Studenten nor StudentInnen is used at all anymore.
There is an easy fix: Using the plural particip of the verb.
Studierende.
Geflüchtete.
Werdende.
There is an easy fix: Using the plural particip of the verb.
Studierende.
Geflüchtete.
Werdende.
Edit: The point is, Latin “studens” also has the concurrency aspect to it, just as German “Studierender”. If you say “studens ambulat”, it means “He/she is taking a walk, while studying.”