pImageEmitter: xxxx particles now alive from this emitter

Hello,

why is the amount of particles from pImageEmitter increasing all the time?
"Create Particles Every Frame" is unchecked. The number of visible particles seems to stay constant, but the message that appears if you hover over the pImageEmitter object shows increasing number of "particles now alive" when scrolling through time.


{
Tools = ordered() {
pRender1 = pRender {
Inputs = {
IntegrationMethod = Input { Value = FuID { "RK4" }, },
_MotionBlurWarning = Input { Disabled = true, },
GlobalOut = Input { Value = 299, },
Width = Input { Value = 1920, },
Height = Input { Value = 1080, },
["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2" }, },
["MaterialID.MaterialID"] = Input { Value = 1, },
["ObjectID.ObjectID"] = Input { Value = 1, },
Input = Input {
SourceOp = "pImageEmitter1",
Source = "Output",
},
},
ViewInfo = OperatorInfo { Pos = { -60.3165, 300.791 } },
},
pImageEmitter1 = pImageEmitter {
ID = 14,
CtrlWZoom = false,
Inputs = {
TimeLockSeed = Input { Value = 1, },
Input = Input {
SourceOp = "Background1",
Source = "Output",
},
["ParticleStylePoint.ApplyMode"] = Input { Value = 1, },
["ParticleStyle.SizeOverLife"] = Input {
SourceOp = "pImageEmitter1SizeOverLife",
Source = "Value",
},
["ParticleStyle.BlurOverLife"] = Input {
SourceOp = "pImageEmitter1BlurOverLife2D",
Source = "Value",
},
},
ViewInfo = OperatorInfo { Pos = { -182.874, 300.791 } },
},
pImageEmitter1SizeOverLife = LUTBezier {
KeyColorSplines = {
[0] = {
[0] = { 0.5, RH = { 0.333333333333333, 0.5 }, Flags = { Linear = true } },
[1] = { 0.5, LH = { 0.666666666666667, 0.5 }, Flags = { Linear = true } }
}
},
SplineColor = { Red = 192, Green = 128, Blue = 64 },
NameSet = true,
},
pImageEmitter1BlurOverLife2D = LUTBezier {
KeyColorSplines = {
[0] = {
[0] = { 0.5, RH = { 0.333333333333333, 0.5 }, Flags = { Linear = true } },
[1] = { 0.5, LH = { 0.666666666666667, 0.5 }, Flags = { Linear = true } }
}
},
SplineColor = { Red = 192, Green = 128, Blue = 64 },
NameSet = true,
},
Background1 = Background {
Inputs = {
GlobalOut = Input { Value = 299, },
Width = Input { Value = 10, },
Height = Input { Value = 10, },
["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2" }, },
Type = Input { Value = FuID { "Gradient" }, },
},
ViewInfo = OperatorInfo { Pos = { -300.047, 303.381 } },
}
}
}