Oculus pinned overlay blinking in-flight?

Per my other thread here, pinned Oculus overlays seem like the holy grail I’ve been looking for to enable both pinned browser windows for charts as well as a browser-based kneeboard that I can write on IRL on my iPad on my knee and have it show up in VR.

However the overlay seems to mostly blink in and out when I have the sim window focused (fine when browser is in focus), and I’ve only had one instance where it was working fine.

Anyone have suggestions for troubleshooting?