It was an arranged marriage, Knew each other for less than 3 weeks and got married in that. I also left bd 15 days after the wedding though I visited twice later (during semester break). Also during the process, my spouse left his job so that might have raised some concerns as they asked us during the interview how we will tackle our financial situation since I am still a student and he is newcomer without a secure job. However, we answered everything with our detail plan for the future and give them the reason for leaving his job. The agent interviewed me (sponsor) for 15-20 min and with the applicant 5 min just to cross check our answers.
The additional document was applicants net worth proof since we mentioned during the interview that he and I have savings which can keep us afloat till we get a job and settle down when asked how we will manage financially in Canada.