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Trigger Re-Render when Scrollability Changes and PermanentTrack is Enabled #172

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6 changes: 6 additions & 0 deletions src/Scrollbar.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -746,6 +746,12 @@ export default class Scrollbar extends React.Component<ScrollbarProps, Scrollbar

this.scrollValues = scrollState;

// Check if the status of whether scrolling is possible has changed, and if it has force a re-render. This handles
// the condition of permanentTracks enabled because otherwise we're depending on trackVisibility changing to trigger a re-render.
if (bitmask & (1 << 8) || bitmask & (1 << 9)) {
this.forceUpdate();
}

if (!props.native && bitmask & (1 << 15)) {
util.getScrollbarWidth(true);
this.forceUpdate();
Expand Down