I have noticed a strange behavior when you click on a smartshape button, or a normal button, with for example a Toggle command (Captivate 7). It then also seems to send a "continue" command. So if you are at the end of a slide, it will go to next in line as an addition to Toggling whatever you wanted Toggled.
I tried for example to do a Toggle TOC button. If the playhead had reached the end of a slide, clicking the button to close the TOC also made it jump to the next slide.
The fix for this is to do the old fashioned Execute Advanced Action, and in that one use the Toggle function. A one line advanced action. Not so advanced... Rather really stupid.