I just discovered two possibly related bugs in the latest release:
1) When splitting the file, the first new file created, Section001.xhtml, appears correctly in the Book Browser and Content.opf. But as soon as you split this to create Section002, Section001 gets renamed, in my case to "xf64414a3-45dd-46a8-a724-dd073bbdbde8" in the Content.opf. See SigilBug1.jpeg.
2) If one changes the order of the HTML files in the Text folder, the document icon disappears from that file's line in the list.
I created a blank file, Section007, and dragged it to the top. The file remains, appears uncorrupted, and appears in the correct spot in the Spine in the Content.opf, just the doc icon has disappeared. See SigilBug2.jpeg.
If one then tries to merge any of the split files back, you get a Python error (SS3). You hit Close and get another error (SS4). Then you hit close again and the file merges.
1) When splitting the file, the first new file created, Section001.xhtml, appears correctly in the Book Browser and Content.opf. But as soon as you split this to create Section002, Section001 gets renamed, in my case to "xf64414a3-45dd-46a8-a724-dd073bbdbde8" in the Content.opf. See SigilBug1.jpeg.
2) If one changes the order of the HTML files in the Text folder, the document icon disappears from that file's line in the list.
I created a blank file, Section007, and dragged it to the top. The file remains, appears uncorrupted, and appears in the correct spot in the Spine in the Content.opf, just the doc icon has disappeared. See SigilBug2.jpeg.
If one then tries to merge any of the split files back, you get a Python error (SS3). You hit Close and get another error (SS4). Then you hit close again and the file merges.