Constant high pitched noise after exporting/rendering in Waveform. – Tracktion Forum

When I rendered my project to a sound file (I tried both mp3 and wav), a high pitched noise was added to it. I have no idea why. It wasn’t there before exporting, and it’s even audible in the parts that are supposed to be silent. After analyzing it with other software, there is a constant tone at exactly 12852 Hz. Does anyone know why it’s there or how to get rid of it (other than just adding a 12852 Hz filter through other software after exporting)?