Zero-width non-joiner is rendered as a red dot (unrenderable)

[amirography]

The zwnj character which is used extensively in Persian and Arabic texts, is rendered as a red dot.

Here is how it should look:
می‌نویسم
Here how it renders:

You can reproduce it by copy and pasting this: "‌"

[marijnh]

This has been fixed last week in 2571b4a . It'll be gone in the next release.

[marijnh]

My bad, I didn't see the non part, and assumed this was about zero-width joiners. Attached patch also removes this character from the default set of special characters.

[WhiteNoiseDev]

Thanks!