fix: issue with beforeDestroy hook #748
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This fixes the issue when the dynamic scroller disappears out of view and the this.$el.parentNode returns nothing causing the observer to have issues, stack trace for current issue follows
``` [Vue warn]: Error in beforeDestroy hook: "TypeError: Failed to execute 'unobserve' on 'ResizeObserver': parameter 1 is not of type 'Element'."
found in
---> <DynamicScrollerItem>
<RecycleScroller>
<DynamicScroller>
<SeatSelect> at src/components/SeatSelectComponent.vue
<Event> at src/views/Event.vue
<App> at src/App.vue
<Root>```
Akryum
changed the title
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This fixes the issue when the dynamic scroller disappears out of view and the this.$el.parentNode returns nothing causing the observer to have issues, stack trace for current issue follows
[Vue warn]: Error in beforeDestroy hook: "TypeError: Failed to execute 'unobserve' on 'ResizeObserver': parameter 1 is not of type 'Element'."