When reviewing our blogs meta data it looks like EasyBlog (It may not be EasyBlog but it is only happening on blog pages. ) is replacing spaces and other ASCII Characters with the HTML character entities.
The OG and Twitter Card Descriptions are not doing this as well as the main blog (latest blogs) page. This may be because we are adding descriptions in the "Meta Descriptions" fields and the OG and Twitter descriptions are being populated via these fields.
It looks like the Meta Description tag is being populated via the content in the blog body (in the editor) and spaces and ASCII characters are being replaced.
See Screen shots for examples.
Example URLs are in the "Other Information" field attached.
Thank You,
Timothy