Screen glitches when using Apple Pencil
When using the “Comment” feature to mark up a document in the reader application, the screen glitches while writing. This does not occur in other apps on the iPad. There are small, but noticeable lines that appear across the entire screen. While the writing itself is unaffected, the pixels on across the screen are.
Kelsey shared this idea
AdminVince @ Adobe (Admin, Adobe) commented
Can you post a screenshot of the issue?