Decided to try tackling this issue. What didn't work:
(1) Doing a repair install of Oculus Home as suggested by Binak Algo
(2) Installing the Oculus version of ED (previously was using standalone)
In either case, I could reliably make Dash (and sometimes the game) freeze up by pinning a window, then pressing the Oculus button to go home. Would crash every time. Saw someone on the Oculus forum suggest opting into the public test channel (Settings -> Beta -> Public Test Channel) in the Oculus app, and that sorted it! Opened the game, pinned a window, went in and out of Oculus home a buncha times, and no crash. Then I flew around in supercruise and docked at a station, periodically doing the same thing, and still no crashes, so I think it's fixed. This also means a fix should be coming to stable fairly soon.