REST API values rounded

i am using openhab REST API to retrieve a state of an item.
While Openhab shows the item as 23.5 °C, the value I receive via API is 23.5000000005 as example.

I guess the problem is that OH is just displaying a value with %.1f but the actual value retrieved by the channel has higher precision?
Is there any way to specify in the item that only 1 decimal should be stored?

Many thanks!

Only the binding storing the value through an update of the channel linked to this item could decide to round the original value it retrieved or computed.
Or a profile (independent from any binding) could probably round value but I don’t think such profile was already implemented.