Being a new user, I’m writing here, as requested by /contribute/report-bugs/

I’m one of what is probably several who have abandoned Adobe Illustrator after Adobe decided not to patch their older versions to work on 64bits.
IMO the first four bugs I mention here are so major that many first time users will decide not to use InkScape again, which is unfortunate as it’s a really great app.

Using vanilla 1.0beta1 on MacOS Catalina 10.15.1 (19B88) with default preferences set.

(1) Surprise Quit
 1) Open Inkscape. 
 2) Close ‘New document 1’
 3) BUG - Inkscape has now quit.  There is no reason why the application should depend upon the existence of a document window.

(2) Location of preferences menu item.
1) BUG -  Preferences is in the Edit menu rather than in the ‘Inkscape’ menu
Actually, many items in the Edit menu, which are to do with application level settings, should be in the Inkscape Menu.

(3) Surprise Preferences panel dimensions.
 1) Open Inkscape. 
 2) Open the preferences panel.
 3) BUG - The panel height stretches across the entire vertical size of the screen, with no ‘preference tab’ content that deep.
     The panel width is unusually narrow, with some form elements being clipped by the panel. (Eg, System, Interface)
     Moreover, the nested tree is surprising, with the higher nodes (eg behaviour) showing minimal details, with no documentation / hints whatsoever.

 (4) Panel/Dialog focus problems.
 1) Open Inkscape. 
 2) Open the preferences panel.
 3) Drag the preferences panel so that the traffic light (close / minimise / zoom) sit over the centre of  ‘New document 1’
 4) Click once on the RED (close) traffic light.
 5) BUG - Focus is transferred to ’New document 1’ and the preference panel fades.  (See following cropped screenshot).

 
(5) New ellipse uses previous ellipse controls.
 1) Open Inkscape. 
 2) Give focus to ‘New document 1’
 3) Create a ‘pacman’ using the (very cool) pie tool.
 4) Deselect, and draw a new ellipse.
 5) BUG- (By default) the new ellipse is the pacman, not a new ellipse.
 6) BUG- (If you believe that 5 is the correct behaviour) a single click with the ’ellipse tool' SHOULD generate the identically dimensioned previous shape at the mouse position.
 7) Both of the above behaviours should be controlled by preferences. There is a ’style’ preference available, but default style and default shape are different.

(6) Outline Display Mode 
Outline Display should (or should be set by preference) show polygon/object centres.

(7) Measurement Tool (Language).
It’s the first time I’ve heard of a starting measurement point being called a Knot.
If you are going to use specialised language, provide a strong hint as to what that is.


(8) Font sample text.
Nearly all fonts include a sample text to show / highlight the font.
Your font dialog does not use that, doesn’t provide a preference to allow for it.
Many font names are incorrect, and likewise do not always show the correct sample (because the InkScape characters are not always represented)
See ‘Baghdad’ as an example below (with Font Book overlay)