This does not always occur, and occurs during different operations (using different document level scripts).
I am using Windows 10 Pro 19041.804 (most recent) and have experienced it on Reader 2021.001.20138 32bit and 64bit versions.
AdminRohit Anand (Admin, Adobe) commented
Sorry for the inconvenience. Can you please follow the steps from here and share process dumps for investigation.
Also, can you please share a sample file with which you are facing this issue.