Hi Sophia He,

I am really sorry for the delay of this reply as it is a weekend for us here.

May i know those 2 post is created from the Easyblog composer or Joomla default editor?

Because Easyblog 5 got 2 type of truncation now : (screenshot : http://screencast.com/t/ezIysN3K4xhr )
#1. Automated Truncation (Composer Posts) - If you create a blog post using Composer, the truncation is base on the left setting
#2. Automated Truncation (Normal Posts) - If you create a blog post using Joomla default editor e.g tiny-mce, Jce-editor or etc, the truncation is base on right setting.

If still can't, can you provide us with your Joomla backend and FTP access so we can better have a look?