diff --git a/src/components/views/rooms/RoomSublist.tsx b/src/components/views/rooms/RoomSublist.tsx
index 0bb7381dbc..ba8bbffbcc 100644
--- a/src/components/views/rooms/RoomSublist.tsx
+++ b/src/components/views/rooms/RoomSublist.tsx
@@ -454,8 +454,9 @@ export default class RoomSublist extends React.Component<IProps, IState> {
         const sublist = possibleSticky.parentElement.parentElement;
         const list = sublist.parentElement.parentElement;
         // the scrollTop is capped at the height of the header in LeftPanel, the top header is always sticky
-        const isAtTop = list.scrollTop <= HEADER_HEIGHT;
-        const isAtBottom = list.scrollTop >= list.scrollHeight - list.offsetHeight;
+        const listScrollTop = Math.round(list.scrollTop);
+        const isAtTop = listScrollTop <= Math.round(HEADER_HEIGHT);
+        const isAtBottom = listScrollTop >= Math.round(list.scrollHeight - list.offsetHeight);
         const isStickyTop = possibleSticky.classList.contains('mx_RoomSublist_headerContainer_stickyTop');
         const isStickyBottom = possibleSticky.classList.contains('mx_RoomSublist_headerContainer_stickyBottom');