Spread option..

When we uncheck “floating spread” to put 0 (its already at 0 in the box), we have to change to 1 and return to 0 to make the application taking it in consideration). then when i click back the Floating option, it stay at 0 spread. If for example i put 1000 in the box for TSLA (was just a test), then i put the spread back from tickdata to on, it stay at 1000.