#### Summary: When a file with a text node containing multiple tspans is saved (default format, "Inkscape SVG"), and reloaded, some font information is lost when one of the tspans has adjusted letter spacing. #### Steps to reproduce: - open Inkscape - choose Text tool, choose some font A (in the example file: sans-serif, 72pt) - create a text object, type some text (in the example: "hello") - select whole text, in text & font dialog choose different font B (in the example: sans-serif, 144pt), click apply - select part of the text, adjust the spacing using the text toolbar (in the example: selected "e", set letter spacing to 50px) - save & reload the file Note that I'm using the default format, so I believe this is SVG 2.0, it's not a compatibility issue. #### What happened? The part of the text with adjusted spacing looks differently after reloading the file - namely, is rendered using font A, not font B. See the attached PNG screenshot (left: inkscape instance which just saved the file; right: new inkscape instance with the same file open). The issue seems to be that the saved SVG now contains 3 tspans, with the middle one only having the spacing information in style attribute, and thus reverting to the font from parent text node (some attributes omitted): ``` <text style=(font A)> <tspan> <tspan style=(font B)>h</tspan> <tspan style="letter-spacing:50px">e</tspan> <tspan style=(font B)>llo</tspan> </tspan> </text> ``` #### What should have happened? The file should look just the same after reloading. I guess the inner tspan should also have the styling properties for "font B". Sample attachments:   #### Version info ``` Inkscape 1.2.2 (1:1.2.2+202212051552+b0a8486541) GLib version: 2.72.4 GTK version: 3.24.33 glibmm version: 2.66.2 gtkmm version: 3.24.5 libxml2 version: 2.9.13 libxslt version: 1.1.34 Cairo version: 1.16.0 Pango version: 1.50.6 HarfBuzz version: 2.7.4 OS version: Ubuntu 22.04.2 LTS ```