KiCad Symbol Table "show" property not saved

Description

De-selecting the "show" checkbox for libraries in the Symbol Library Table does not save. The (hidden) property is never written to the sym-table-lib preferences file. A manually-added (hidden) does successfully hide the library in the component selector, but is removed upon re-opening the symbol table editor in the GUI.

Steps to reproduce

This issue is present with no project laoded.

1. Open KiCad
2. Open the symbol table editor: Kicad > Preferences > Manage Symbol Libraries...
3. De-selct the "show" checkbox for any library.
4. Close the symbol table editor.
5. Re-open the symbol table editor, the checkbox is now checked.

KiCad Version

Application: KiCad x64 on x64

Version: 10.0.0-rc1.1, release build

Libraries:
	wxWidgets 3.3.2
	FreeType 2.13.3
	HarfBuzz 12.3.0
	FontConfig 2.17.1
	libcurl/8.18.0 Schannel zlib/1.3.1

Platform: Windows 11 (build 26100), 64-bit edition, 64 bit, Little endian, wxMSW
OpenGL: ATI Technologies Inc., AMD Radeon RX 9070, 4.6.0 Compatibility Profile Context 25.20.42.251205

Build Info:
	Date: Feb 12 2026 01:10:28
	wxWidgets: 3.3.2 (wchar_t,STL containers)
	Boost: 1.90.0
	OCC: 7.9.2
	Curl: 8.18.0
	ngspice: 45.2
	Compiler: Visual C++ 1944 without C++ ABI
	KICAD_IPC_API=ON
	KICAD_USE_PCH=OFF

Locale: 
	Lang: en_US
	Enc: UTF-8
	Num: 1234.5
	Encoded кΩ丈: D0BACEA9E4B888 (sys), D0BACEA9E4B888 (utf8)