Exporting a Mermaid diagram to png fails when a text contains ` `

[raffaeler]

• Searched existing issues to avoid creating duplicates.
• Confirmed that it can be reproduced in built-in themes without customized css.
• Searched http://support.typora.io/

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Describe the bug
If a mermaid graph contains one or more   characters in the text, the export operation to .png fails.

To Reproduce
Steps to reproduce the behavior:

1. Create a file with the following mermaid markup:

flowchart LR
	Test["   Test"]

2. Try to export the diagram to png: it fails
3. Try to export the diagram to svg: it succeeds, but appears as broken in Chrome

Expected behavior
I expect the export operation to be successful.

Screenshots / Screencasts
Not applicable. The operation fails silently.

Desktop (please complete the following information):

• OS: Windows 10 64bit

Typora Version
1.7.6

[abnerlee]

seems fixed already, tested with Typora 1.11.5