Schematic plot PDF results in pages out of order after page numbers were changed in schematic editor

Description

Current behavior:

I have a schematic with a few hierarchical sheets. While working on the project I added new sheets, deleted others, and manually re-numbered the sheets to reflect the final desired page order.

Now, when plotting the schematic to PDF using the plot option, the PDF pages are out of order like this:

• Page 1
• Page 2
• Page 4
• Page 3

Expected behavior:

When the schematic is plotted to PDF, the pages of the PDF should match the sheet numbering in the KiCad schematic hierarchy like this:

• Page 1
• Page 2
• Page 3
• Page 4

Steps to reproduce

1. Unzip and open the attached KiCad project
2. From the Schematic editor, File -> Plot... -> Plot All Pages
3. Open the resulting PDF and notice that the page order of the PDF does not match the page order of the KiCad schematic

schem_plot_page_order.zip

KiCad Version

Application: KiCad Schematic Editor x64 on x64

Version: 9.0.1, release build

Libraries:
	wxWidgets 3.2.6
	FreeType 2.13.3
	HarfBuzz 10.2.0
	FontConfig 2.15.0

Platform: Windows 11 (build 26100), 64-bit edition, 64 bit, Little endian, wxMSW
OpenGL: ATI Technologies Inc., AMD Radeon RX 7900 XTX, 4.6.0 Compatibility Profile Context 24.4.1.240409

	wxWidgets: 3.2.6 (wchar_t,wx containers)
	Boost: 1.86.0
	OCC: 7.8.1
	Curl: 8.11.1-DEV
	ngspice: 44
	Compiler: Visual C++ 1942 without C++ ABI
	KICAD_IPC_API=ON

Locale: 
	Lang: en_US
	Enc: UTF-8
	Num: 1,234.5
	Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8)