Writer formula is not updating

I created two tables (.odt document) and I made a formula like this:
=((<Table1.B6>*)+)/60

A problem occurs when I want to change a value of “Table1.B6” and the result in second table remains the same, until I make a click to Table2.

It not occurs if formula contains only fields from one table and results is changed automatically, wherever you click.

Is there a way how to avoid this issue?

Thanks!