Thanks for testing.  To answer your question, this is as designed.  The idea is that if you have a preference for where the launcher should be placed then you probably care about it.  In the absence of any other information about why it is annoying I'm going to close this as notabug.

Hi,

this is annoying, because rearranging icons is something completely different then wishing to persist that application icon. I want some logic in how my programs are arranged in task bar, but I don't want that icon in my favorites.

It's about my intentions - when I move something, I don't plan to have something persisted, I just want to move it. I care about location, not about that app being there later. I become annoyed when program decides on something I didn't say I wanted and I have to take one more step to revert program's decision (though it is nice, that I'm notified! I appreciate that very much!).

Please reopen.

Thank you.
Oleg