After undo, arcs/circles written incorrectly as ellipse instead of path

Summary:

I somehow made an arc that Inkscape saved as an <ellipse> with a d attribute that doesn't correctly render in Web browsers, instead of the correct <path>. This bug looks like #2489 (closed), but happened in a file I made entirely with 1.1.1.

Steps to reproduce:

1. Draw an ellipse
2. Drag start or end handle to turn into slice
3. Undo
4. Drag start or end handle to turn into slice
5. Save

What happened?

When I saved an Inkscape SVG, it wrote this:

<ellipse style="fill:#55ddff;stroke-width:0.884055;stroke-miterlimit:0" id="path1241" sodipodi:type="arc" sodipodi:cx="8" sodipodi:cy="8.55702" sodipodi:rx="4" sodipodi:ry="8" sodipodi:start="3.14159" sodipodi:end="0" sodipodi:open="true" sodipodi:arc-type="arc" d="m 4,8.55702 a 4,8 0 0 1 2,-6.9282 4,8 0 0 1 4,0 4,8 0 0 1 2,6.9282" inkscape:transform-center-y="-4" inkscape:tile-cx="8" inkscape:tile-cy="7.99997" inkscape:tile-w="8" inkscape:tile-h="8" inkscape:tile-x0="4" inkscape:tile-y0="-3.00407e-05" />

And when I saved it as Plain SVG, it wrote this:

<ellipse style="fill:#55ddff;stroke-width:0.884055;stroke-miterlimit:0" id="path1241" d="m 4,8.55702 a 4,8 0 0 1 2,-6.9282 4,8 0 0 1 4,0 4,8 0 0 1 2,6.9282" />

What should have happened?

It should have written <path> elements.

Version info

Inkscape 1.1.1 (3bf5ae0d25, 2021-09-20)

    GLib version:     2.70.0
    GTK version:      3.24.30
    glibmm version:   2.66.1
    gtkmm version:    3.24.5
    libxml2 version:  2.9.12
    libxslt version:  1.1.34
    Cairo version:    1.17.4
    Pango version:    1.48.10
    HarfBuzz version: 2.9.1
    Poppler version:  21.08.0

    OS version:       Windows 10 2009

Introduced in 7a6a1baa

Author: Joseph Da Silva <joseph.f.dasilva3@gmail.com>
Date:   Wed Mar 20 21:22:46 2019 +0530

    Fixed: circles and ellipses had wrong element names in XML editor (Issue #116)