Calligraphy, wacom, smoothing unusably aggressive

Using the calligraphy tool, writing with moderate speed using a Wacom tablet, the visible strokes are illegible, probably due to smoothing / averaging / mass .

Detail and to reproduce

After opening Inkscape, and selecting the Calligraphy tool, writing "hello" cursively using the pen on a Wacom tablet, and see something like "/\_1--_" . This can be reproduced even when writing slower than normal. Circles drawn anticlockwise from 12 look like the number 6. I can see the mouse pointer responding perfectly, but the visible strokes are averaged / weighted / smoothed / filtered or similar so the generated line is poor. The lines produced stop when I lift the pen / stylus, but the position at the end is generally wrong.

What happened?

Pen strokes get smoothed to illegibility. Drawing circles on top of each other at any speed faster than about 2.5Hz leads to just randomness near the centre.

What should have happened?

Pen strokes should be generated from the cursor movements and not smoothed too aggressively, the stroke should follow the same path as the actual cursor reasonably closely, while respecting the pen pressure.

Compared to

By way of comparison, Krita handles writing on the tablet perfectly. Even LibreOffice Draw, which does a Spline fitting operation, appears much better. And the old version of Inkscape 0.92.5 (2060ec1f9f, 2020-04-08) appears fine also. Is this issue Snap-related?

Debug info

Inkscape 1.1 (ce6663b3b7, 2021-05-25)

GLib version:     2.64.6
GTK version:      3.24.20
glibmm version:   2.64.2
gtkmm version:    3.24.2
libxml2 version:  2.9.10
libxslt version:  1.1.34
Cairo version:    1.16.0
Pango version:    1.44.7
HarfBuzz version: 2.6.4
Poppler version:  0.86.1

OS version:       Ubuntu Core 20