I think you’re right too. I have commented on it a couple of times already, in one or two threads.
In order to compare for motion, it needs at least 2 frames. If it’s dark, it needs the IR illuminator.
Whatever sensitivity gave you many triggers before, will give many triggers now, it will just check the mask, and not upload them. All the while though, motion is first detected by the PIR, the IR filter is moved, illumination is provided as necessary, images are taken, comparisons are done, and, after comparison, nothing is uploaded, so you receive no alert, or recording, but still, it has been active as above. I believe I read for two seconds, and certainly we have seen some clips of the IR illuminator repeatedly keep coming on for two seconds.
As I commented before, and will comment again, this is not the massive battery saver it is made out to be. Mind you, not sure if it’s claimed to be a battery saver, just a false alert prevention.
Obviously it will save some, because instead of 5 or 10 second clips, each time there is a zoned out trigger, now it will only be active for 2 seconds, and you don’t have to troll through a bunch of clips to discard, which is good, but I can easily imagine a zoned out bunch of foliage being checked hundreds of times on a windy night.