Why in BitComet in the main Window is showing as the bits (for example 78 bit) are upload but while in my task list isnt any for uploading task?
BitComet uses Long-Term Seed (LTseed) which is a feature, and a protocol for file sharing. When enabled, it’s what can allow bitcomet to outperform other clients. It’s designed to make use of unused bandwidth so that you can upload to other peers when you have no active tasks uploading.
You can read more on wiki.bitcomet.com