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Hi Michael,
Thanks for your sharing.
I did a test and found the behaviour matches your description:
The new added items could not appear until I refresh and enter the page again.
Our team has collected the BUG repro steps, and since you have opened a support ticket and had an workaround, I could not provide more suggestions other than that.
Thanks for your understanding and supporting again.
Have a nice day: )
Best Regards,
Oliver