Zoom in very closely on the end of the clip. It sounds as though the program has added a fade in/out.
Please indicate what version of Premiere Elements you have and on what computer operating system it is running.
Please check out my blog post on PE11: Timeline Fade Out Shortcuts and Time Stretched/Time Remapped Video.
and determine if any of the information in the blog post applies to your situation.
Some interesting and unexpected happenings.
I selected a clip and then used the effects palatte, and the opacity panel, to do a fade in/out on the clips as discribed on your blog.
Thanks for your help,
Thanks for the reply.
Glad that the information was of interest. Please do not hesitate to ask questions or ask for clarification on anything written.