When i use a UI, panel, in a UNET environment it replace the position of the panel if it runs as client. I use the the same resolution in both the “host” and the client. Se pictures below as an example.
Is the GameView/Screen diffirent on these enviroments ?
The UI elemenets change position according to the screensize since the position is relative to the achor value and the offset is a relative size based on the size of the parent element and ultimately the screen size.
If you want them to become more reliable you must fit the Anchor by at the exact same spot as the Rect of the RectTransform.