Set wrong metadata

[kinglion580]

Detail:
if you click set metadata -> set time, it will be {++"time":1709865543@@xxx++} , you can see it is not surrounded metadata with {} . same situation for set author.

example:
set metadata -> set author to set author to me
expect:
{++{"author":"me"}@@xxx++}

actual:
{++"author":"me"@@xxx++}