Let's do things together:
When the 3D-view is selected, it is first cropped sideways - it must first be zoomed out to see the entire trajectory.
In my web based version of today (May 22nd 2019) the "Fit to scene" button only works correctly if 2D-view is chosen. In 3D-view the trajectory is always cropped by the "Plan editing" menue.So you have to click away this menue additionally or zoom out - unnecessary steps in the workflow.
That was one of the reasons because I proposed to make the menue-area and the fonts in it a little bit smaller (at least for desktop-PC monitors).
Beside this: The "Fit to scene" button doesn't work at all in the 3D-view!
Apologies, yes the button functionality is not yet linked (only in our current dev version). Thanks for pointing it out. Changed status to in development.
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