What gets placed on the OS X Clipboard is determined by the source material
you're copying from & the program you're using when you copy - in this case,
your browser. The program you're using when you paste determines what it can
use from the content available on the Clipboard.
I'm reasonably certain that nothing has changed in Office/PPT that would
modify its paste method, so the first thing I would suggest is that you make
sure that whatever browser you're using is fully updated... I've seen many
changes take place over the last several years in how both Safari & Firefox
behave. Also, confirm that Office is fully updated as well. There are other
factors involved when copying from web pages which are beyond your control &
not all pages are constructed in the same way. You really can't be sure
exactly 'what' is being copied just based on what you see being displayed.
Rather than simply 'copying', right-click the selected content & use the
alternatives offered in the contextual menu. If the problem persists, try
using Edit> Paste Special - Unformatted Text in PPT.
I have no idea what you mean by "auto symbol", though. The only icon I'm
aware of is the Paste Options button which appears after pasting. It looks
like a Clipboard which you can click to choose from a menu of options
pertinent to the pasted material, but it does nothing to prevent the pasting
from being done. Can you provide more detailed descriptive info about this
symbol, what happens if you click it, etc.?
HTH |:>)
Bob Jones
[MVP] Office:Mac