Balsa not threading correctly?

[Andreas Schmidt <andy space wh1 tu-dresden de>]

Hi, I just noticed that balsa (still 2.0.17; just looked over  
changelog/bts though and didn'f find any mention of this) seems to have  
difficulties with threading messages. I first thought that there was  
something wrong with the message headers and wanted to repair the  
threading with mutt. However, mutt already did display the messages in  
the correct order.

I have attached two screenshot excerpts that show how mutt and balsa  
handle the same thread. If you need any other info, just holler!

Best regards,

Andreas