Bitbucket online editor handles file character encoding incorrectly

Adding a dot after options for some reason changes a pound sign as well. File was correctly encoded before using the online editor

Looking at diff on bitbucket shows:

- from just £99 per month. Perfect for new and small businesses. 
+ from just £99 per month. Perfect for new and small businesses. 
 
- options..
+ options...

file before commit:

file -bi src/pages/index.md
text/html; charset=utf-8

file after commit with online editor:

file -bi src/pages/index.md
text/html; charset=iso-8859-1

Modifying a file with local editor correctly changes just that line

-options...
+options....

Attached 2 files first before modification, second after modification with online editor

File character encoding should remain utf-8