Code not formatted properly when no space left from previous text

Version 0.7.3 1008.4
This code block is rendered properly in GitHub, each line in each line:

https://github.com/lay295/TwitchDownloader/blob/master/README.md

````
With the CLI, it is possible to automate video processing using external scripts. For example, you could copy-paste the following code into a `.bat` file on Windows to download a VOD and its chat, and then render the chat, all from a single input.
```bat
@echo off
set /p vodid="Enter VOD ID: "
TwitchDownloaderCLI.exe videodownload --id %vodid% --ffmpeg-path "ffmpeg.exe" -o %vodid%.mp4
TwitchDownloaderCLI.exe chatdownload --id %vodid% -o %vodid%_chat.json -E
TwitchDownloaderCLI.exe chatrender -i %vodid%_chat.json -h 1080 -w 422 --framerate 30 --update-rate 0 --font-size 18 -o %vodid%_chat.mp4
```
````

However the app puts everything into one line unless a space is left like so:

````
With the CLI, it is possible to automate video processing using external scripts. For example, you could copy-paste the following code into a `.bat` file on Windows to download a VOD and its chat, and then render the chat, all from a single input.

```bat
@echo off
set /p vodid="Enter VOD ID: "
TwitchDownloaderCLI.exe videodownload --id %vodid% --ffmpeg-path "ffmpeg.exe" -o %vodid%.mp4
TwitchDownloaderCLI.exe chatdownload --id %vodid% -o %vodid%_chat.json -E
TwitchDownloaderCLI.exe chatrender -i %vodid%_chat.json -h 1080 -w 422 --framerate 30 --update-rate 0 --font-size 18 -o %vodid%_chat.mp4
```
````

No idea if the markdown mandates to have an empty line
or should work anyway.

Reproduce the issue in MacDown using the supplied Markdown examples, comparing a fenced code block immediately after text with one separated by an empty line. Trace the Markdown rendering path to identify why the first form is collapsed into one line; done means both forms render with the code block's line breaks preserved.

Written by the indexing model from the issue text.