Rather than address your question, I'm going to look at the root cause. It won't directly answer the question, but it will provide instruction about how to reduce the frustration by it. I am not basing this off testing I've done with Google Docs and SpeedGrader, so there may very well be an issue there, but what you're describing sounds like something else to me.
The first paragraph being at the bottom of the title page is because your students are not creating the document correctly. You should not hit enter a bunch of times to create a new page. Instead hit Ctrl-Enter (the same thing works in Word).
When you hit enter a bunch of times, it is very dependent upon the font and margins that you're using. Change those and it doesn't come out right. Pick a font that isn't supported in the viewer and it doesn't come out right.
If the student doesn't know how to force a page break, they may not know how to do a hanging indent either. Some of the more popular citation tools simulate it by inserting 5 spaces. If the font size changes or the margin changes or the font isn't supported, then those five spaces may move from the beginning of one line to the end of another.
Not knowing the proper way to create a document is a very common problem.
As to why it's different now than before, I cannot say. It just appears that it was done incorrectly in the first place, so it might actually be fixed now when it was broken before. It's hard to tell. Maybe someone else can address the combination of the two.
One thing I would do is open it in Word and see if it looks right there. Even that's not a guarantee as you might have the font loaded on the local machine that Canvas is forced to do a substitution for.
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