[newsletter:post_title] issue

Hi team,

I know you had to deal with this issue a few versions before but the latest version of the plugin (3.0.0-rc.2.0.2) has it again:

When I use [newsletter:post_title] in Post Notifications Subject, the plugin does not pick up the actual title for real emails leaving the subject line blank. However, preview emails pick up the title with [newsletter:post_title] in subject line just fine.

Can this be fixed permanently please? And how can I fix this asap in the meantime?

Cheers,