Hello
I have a simple hud wich present a menu of location to teleport to
when playing in the editor preview everything is ok
but when i run it with oculus this happens 
UMG + HMD is not a option (at least nowadaysâŚ). Go for classic HUD instead widget viewport.
Try make a Widget (Lets call it A), set itâs anchor as the entire screen then take your menu there (Lets call it B). Then you place Widget B in Widget A (as it will be listed under User Created Widgets in the menu to the left) so that Widget A is now the parent.
Since Widget B expects to âFill the Screenâ it will fill out the entirety of itâs parent Widget A. Since Widget A is set as an anchor to the entire screen it should be placed correctly. I hope this works for you.