I work at construction sites and the mechanical engineering drawings are supplied in pdf format. Recently I have experienced and issue where the app crashes while viewing the files. It seems to happen when I zoom in or scroll the file fast. The PDF files are opened and stored in document cloud. The files are very large in actual size, about a meter tall and couple meters wide, containing detailed drawings and plans. They are also mark with apple pen for remarks and corrections. Because of information security I can’t post any plan files to test with.

I’ve tried uninstalling the app and also rebooting the device.

I’m running 6th gen iPad with iPadOS 13.1. Adobe version 19.19.02