I noticed various issues with various modules over the years and this topic doesn't seem to have a top priority with most Dev's. Hence, I use OpenKneeboard and the software lets you manipulate the Kneeboard so you can place in anywhere (inside/outside cockpit, on your knee) and resize, angle, etc. Two other benefits are, it works with pdf format and and if you buy a simple 'pen tablet (fi Wacom One, 35Euro Amazon), and then you can even hand write on it. Very handy, especially in VR, and less immersion breaking.