--- frescobaldi_app/qpageview/shadow.py.orig	2021-10-22 11:18:50.427497680 -0500
+++ frescobaldi_app/qpageview/shadow.py	2021-10-22 11:17:11.795956469 -0500
@@ -40,7 +40,7 @@
             width = self._pageLayout.spacing / 2
             # make the rect slightly larger, so we "see" shadow of pages that
             # would be outside view normally.
-            rect = ev.rect().adjusted(-width, -width, width / 2, width / 2)
+            rect = ev.rect().adjusted(int(-width), int(-width), int(width / 2), int(width / 2))
             painter = QPainter(self.viewport())
             for page, rect in self.pagesToPaint(rect, painter):
                 self.drawDropShadow(page, painter, width)
--- frescobaldi_app/qpageview/scrollarea.py~	2021-10-27 11:22:52.257739052 -0500
+++ frescobaldi_app/qpageview/scrollarea.py	2021-10-27 11:24:01.380292302 -0500
@@ -186,9 +186,9 @@
         else:
             viewport = self.viewport()
             vbar.setRange(0, h - viewport.height())
-            vbar.setPageStep(viewport.height() * .9)
+            vbar.setPageStep(viewport.height() * int(.9))
             hbar.setRange(0, w - viewport.width())
-            hbar.setPageStep(viewport.width() * .9)
+            hbar.setPageStep(viewport.width() * int(.9))
         
     def scrollOffset(self):
         """Return the current scroll offset."""
--- frescobaldi_app/qpageview/shadow.py~	2021-10-27 11:30:20.542841719 -0500
+++ frescobaldi_app/qpageview/shadow.py	2021-10-27 11:33:51.497472301 -0500
@@ -53,7 +53,7 @@
         
         """
         width = round(width)
-        rect = page.rect().adjusted(width / 2, width / 2, 0, 0)
+        rect = page.rect().adjusted(int(width / 2), int(width / 2), 0, 0)
         color = QColor(Qt.black)
         pen = QPen()
         pen.setWidth(1)