Filter Change Handler triggering even when no filter is changed

[#1]

Just noticed that Filter Change Handler is triggering when just on hovering over graph and returning value -1. Simple example script here, run it, check log and hover over markers in the graph

Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Probe.jmp");


nw = new window("",
	Data Filter Context Box(
		H List Box(
			lf = dt << Data Filter(
				Local,
				Mode(Include(1)),
				Conditional,
				Add Filter(columns(:Wafer Number), Display(:Wafer Number, N Items(15)))
			),
			gb = dt << Graph Builder(
				Size(534, 456),
				Show Control Panel(0),
				Variables(X(:R_RSICR_100X20), Y(:R_RPPBR_4X15)),
				Elements(Points(X, Y, Legend(3)))
			);			
		)
	)	
);

f = Function({a}, 
	Print(a)
);

rs = lf << Make Filter Change Handler(f);

gb << On Close(
	Try(Close(dt, no save));
	rs = .;
)

Also when filter is changed it seems to trigger twice (but I would say this is to be expected with JMP).

Using JMP16.2 Pro and Windows 10.

[#2]

I have a post about this - I'll dig it out

[#3 · Accepted solution]

Unexpected Events from Local Data Filter Change Handler