The problem is indeed strange, as it doesn’t always occur immediately in a new note, but later becomes constant and regular. The link (in parts) to the recording below:
https://www.dropbox.com/scl/fi/tnfzod78pt3fq42nudu0q/screen-20250826-101430-2.mp4?rlkey=2qqwpxj2tvhxue0d1nbgpz3sz&st=6sjmfp6w&dl=0