I think this is not a bug, but running afoul with the Stack Exchange automatic list numbering behavior. For example below I type "1. item" three times on three separate lines, but presently get as displayed output "1. ... 2. ... 3. ...":
The addition of Quote markdown does not change this:
To get verbatim output ...
Click the "edit" or "improve this answer" link under the post (whichever you see) and take a look at the Markdown source.
It looks like
There are many of these because they are easy to enter using these tools.
In the editor's text-input panel
Put the cursor where you want the image to appear in your post.
Type Ctrl+g to get a drag-and-drop image drop panel.
Drag a PNG image into the drop panel.
Click on Add Picture at the lower-right of the drop panel.
Here is an image that I loaded into this post by the method described above:
Maybe I misunderstand your question, but why don't you use inline code which is marked by a beginning and ending backtick? To make Integrate[x,x] you just have to type `Integrate[x,x]`.
There is a Formatting help page with specific instructions for comments.