Tables written in markdown supresses references in rendered document

# Description
When inserting a table written in markdown (compared to written in HTML), the reference list at the bottom of the rendered document (footer) vanishes. This only happens if only some of the cells in the table are filled.

# How to reproduce
* Joplin 2.13.15 on Linux
* BibTex 0.5.0

1. Create Document
2. Add one or multiple references. The reference list should be rendered
3. Add a markdown table (Can be empty or partially filled, see example). The reference list vanishes.
```md
|T |D |
|---|---|
| a | |
```
4. Remove the markdown table or fill it out completely—the reference list re-appears.

# Workaround
**1. Option:** Fill the markdown table. If you have cells which need to be empty, fill them with an empty HTML tag
```md
| T |

|
|---------|-----------------|
|
|

|
```

**2. Option:** Use HTML

# Suspected Origin
I do not know. Running the developer tools, the entry for the reference list in the rendered markdown vanishes. The origin of this problem might also not be with the plugin. I thought I would document my findings here for people having the same issue.