Newly submitted items are not displayed when SPFx Field Customizer

When applying the SPFx Field Customizer, the list will be displayed in the old UI. When I post an item to the old UI list, the latest item posted is shown in the list view, but it does not immediately appear on the screen where it is pasted as a web part on the page.

Steps:

1. Prepare a list with SPFx's Field Customizer applied
2. Display the target list on the page
3. Display the page and the list in separate tabs
4. Post an item to the target list
5. The item does not appear on the page where the list web part is placed
6. Reloading (F5) on the page sometimes shows or does not show the latest item