I performed a firmware update today on my DS-2CD2047G2-L camera, directly from the Hikvision website, to version Firmware_V5.7.15_240411. I noticed that in areas where motion is detected, even with leaves, strange codes appear on the image, both in real time and on recordings. I have never seen anything like this before, although I have had surveillance cameras for many years. Could this be a bug in this firmware?