Advance Parole

I want to share my experiences for all of those who need to travel using advance parole. I have a pending Marriage AOS. Before that I had DACA and used advance parole back on 2015 when DACAs could use advance parole thats how I was able to apply for adjustment of status. Married last year and apply for AOS on March 2018I received my combo card in october 2018 andsince then I left the country 4 times 3 times to canada and 1 time to mexico. All of the times I used it as vacations and I never had any problems, only when traveled the two times to canada by land when I re-entered to the US both times the officers asked me what do they do to my advance parole card. The first time the officer just look at it and handed me back my pssport and told me to drive ahead he never stamped my passport, the second time another oficer in the Windsor-Detroit Border check point asked tge same thing so I told him he had to stamp my passport and update my I94 he told me to park my car and go inside to the second inspection room. I waited like 2 hours and he was asking everyone how to handle it and finally he couldnt figure it out so he told me there you go have a good day and let me and a friend go. But the last time I flew to Canada and when I cane back at the airport they know how to handle that and they just stamped my passport and updated my I-94