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.
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.
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!
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