What question? To be specific - if you passed first stages and 'everything is done', then clearly the name issue has not been a problem. If there's an issue, it's something else.I also like to ask the same question.
Order your gcms notes, contact your mp.
Again, clearly this is not the core issue with your application.I did not know that the middle name is part of the given name, as my passport separated the Given name, middle name and surname. I remember when filling the application it says write the guven name as stated in your travel document it never stated that middle name is part of given name.
But no: instructions say quite clearly - "Enter all of your given name(s) (first, second or more)." The only other type of name mentioned here is surname or last name. The Canadian practice only has two types: given names, or surname. You either think your middle name falls in one of those two categories, or shouldn't be included at all.
It's clearly not a last name. There's no 'middle name' category. So it either goes in given names or is left out. (If it's in your passport, probably best to include it).
But remember: IRCC isn't playing games, and it's not trying to surprise anyone. It's not a trick question. You just enter your name.
(And IRCC probably doesn't care much about middle names anyway, unless it's essnetial to identifying the individual.)
But it's not the fault of the instructions.