Thanks for confirming. We'll have a fix for that in the next update.
Re aborting the operation, while each zip file gets its own new progress dialog, if I abort the current progress dialog, it also aborts all further extraction of archives. Does that not happen for you?
(I'm aborting extraction via the Abort button in the progress dialog. Have not tried other methods like right-clicking the jobs bar icon, in case you're doing something different.)