In searching the Internet I think the lack of a removal of the speckles after pressing the "Update" button (after using "suppress speckles") is simply a bug, and not a major problem (the speckles were gone in the final product). So, this issue is solved.
Note, the reported dependency of "popt >= 1.14" I think is a typo in the package that should be fixed. It does still install and work, if one chooses to ignore the warning of the missing dependency and proceed with the install. Still, I think the typo should be fixed. But it wasn't the actual issue I was posting about in this thread. So, I'm marking this as solved.