According to the Markdown help, code blocks within lists have to be indented two levels, i.e., eight spaces, like this:
* Item
Code
12345678
(Counter just for illustration). In Q&A, this renders as follows:
Item
Code
If I do the exact same thing in Documentation, I get this:
Notice the extra white space in the code block (freehand red circle courtesy of Abhitalks). To get my code properly aligned, I have to use six spaces:
* Item
Code
123456
resulting in
It should be the same everywhere, shouldn't it?
ETA: It wouldn't bother me (much), but because Ctrl+K toggles indentation and doesn't just add four spaces, there is no easy way to get two levels of indentation – so I often add a dummy character without indentation on the line before an indented code block and use Ctrl+K to indent again (and then delete the dummy character), but this breaks if the required indentation is six instead of eight spaces.