When backticks are used in certain ways it can break code block rendering
Add the following content:
````
code+` ``
second code block
third code block
``````
second code block.undefined+ from the first code block
I try in safari, it is all the same.
Hey @hzb,
Sorry to hear you're having trouble but I'm not entirely sure what you are attempting to achieve. I tried to follow your instructions by writing the code you provided in a markdown code block but both the preview and final post always displayed the full text (see image below). The same text outside of a code block also rendered the full text.

I'll close this for now as it sounds like it's possibly a theme issue or maybe user error, if you can provide a clear reproduction case I can re-open. I also suggest popping over to our Slack channel and asking in #help too - it may be easier to explain what you are attempting to do in chat.
@kevinansfield NO, you can't close this issue, I tested all versions of ghost, from 0.1 to current version, this isn't an issue, i think it's a bug. I record a video, can you give me your email address, I will send it to you.
@hzb please attach a link to the video here on this issue or provide concrete reproduction steps, as I said before we can re-open if a bug is found/proven
@kevinansfield Please download the video from here
https://www.dropbox.com/s/brl5elvtdow5nc0/markdown_error_ghost.mp4?dl=0
In ghost.io and all ghost versions.

look at two sides contents, do you still think it's right?
In other markdown editor, this is real right.

@ErisDS @kevinansfield can you open this issue?
@hzb thank's for following up with a reproducible test case, I've edited your original issue so that it's clear what the problem is.
We're currently working towards Ghost 1.0 which will have a completely new editor but I've re-opened so that this can be tracked for the LTS branch and for any backwards-compatible markdown support that may be added to the new editor.
@kevinansfield welcome.