I am a Thai citizen and I am currently living in France with a student long-stay visa (1 year). I am planning to go back to Thailand this December for two weeks however my concern is about my departure and arrival back to France (to continue my studies) since next December my arrival in France will be over 3 months in the past and I haven't got the stamp from OFII (Office Français de l'Immigration et de l'Intégration).
I did receive a receipt from OFII. It shows that these period of time the office is quite busy. My documents are in the process but it might not be on time to get the stamp before leaving France back to Thailand.
My question is will I be able to go back to France with my long stay visa + an OFII receipt (without the stamp)?