It seems to me that the \clip command, as in
'\begin{scope}'
\clip (0,0) circle (1);... some stuff possibly bleeding outside the circle ...\end{scope}
works well only when there is just one figure in the page.
If a second figure containing a \clip command is added in the same page, the "shape" of the new clipping area is ignored, and the one for the previous figure is used.
Here is a MWE.
It seems to me that the
\clipcommand, as in '\begin{scope}'\clip (0,0) circle (1);... some stuff possibly bleeding outside the circle ...\end{scope}works well only when there is just one figure in the page. If a second figure containing a\clipcommand is added in the same page, the "shape" of the new clipping area is ignored, and the one for the previous figure is used. Here is a MWE.