If "nothing" has changed, then Submit is supposed to "do nothing".
If you want to refresh the page with all the parameters as set, you should be able to click the URL bar and press return (so long as there are no hidden tokens, they’ll all get set in the query portion of the URL).
from User warren – Stack Overflow https://stackoverflow.com/questions/69418942/splunk-submit-button-submitbutton-does-not-refresh-dashboard-if-no-inputs-are/69436605#69436605
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