Program crash when using the color picker.
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#### Summary:
<!--Summarize the issue/suggestion concisely:-->
Using the colour picker from objectpropertis dialog causes a program crash, always
#### Steps to reproduce:
<!--Describe what you did (step-by-step) so we can reproduce:-->
- open Inkscape
- open a document
- select a object
- go to tab objectpropertis
- use color picker from "Fill paint" or "Stroke paint"
#### What happened?
The program crashes
<pre>
0# boost::stacktrace::basic_stacktrace<std::allocator<boost::stacktrace::frame> >::init(unsigned long long, unsigned long long) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
1# Inkscape::Application::crash_handler(int) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
2# 0x00000000000020B2 in C:\Program Files (x86)\Inkscape\bin\inkscape.exe
3# _C_specific_handler in C:\WINDOWS\SYSTEM32\ntdll.dll
4# _chkstk in C:\WINDOWS\SYSTEM32\ntdll.dll
5# _RtlRaiseException in C:\WINDOWS\SYSTEM32\ntdll.dll
6# _KiUserExceptionDispatcher in C:\WINDOWS\SYSTEM32\ntdll.dll
7# Inkscape::Colors::Color::toString[abi:cxx11](bool) const in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
8# sp_desktop_set_color(SPDesktop*, Inkscape::Colors::Color const&, bool, bool) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
9# Inkscape::UI::Tools::DropperTool::root_handler(Inkscape::CanvasEvent const&) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
10# Inkscape::UI::Widget::CanvasPrivate::emit_event(Inkscape::CanvasEvent&) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
11# Inkscape::UI::Widget::CanvasPrivate::process_event(Inkscape::CanvasEvent&) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
12# Inkscape::UI::Widget::Canvas::on_button_released(Gtk::GestureClick const&, int, double, double, int) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
13# Inkscape::UI::Widget::Canvas::on_button_released(Gtk::GestureClick const&, int, double, double, int) in C:\Program Files (x86)\Inkscape\bin\libinkscape_base.dll
14# Gtk::GestureClick::~GestureClick() in C:\Program Files (x86)\Inkscape\bin\libgtkmm-4.0-0.dll
15# 0x00007FFD76C66ADA in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
16# _g_closure_invoke in C:\Program Files (x86)\Inkscape\bin\libgobject-2.0-0.dll
17# _g_param_spec_variant in C:\Program Files (x86)\Inkscape\bin\libgobject-2.0-0.dll
18# _g_signal_emit in C:\Program Files (x86)\Inkscape\bin\libgobject-2.0-0.dll
19# _gtk_gesture_long_press_get_delay_factor in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
20# _gtk_event_controller_get_type in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
21# _gtk_widget_class_add_binding_action in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
22# _gtk_widget_translate_coordinates in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
23# _gtk_get_default_language in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
24# _gtk_get_default_language in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
25# _gdk_toplevel_capabilities_get_type in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
26# _gdk_snapshot_get_type in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
27# _g_closure_invoke in C:\Program Files (x86)\Inkscape\bin\libgobject-2.0-0.dll
28# _g_param_spec_variant in C:\Program Files (x86)\Inkscape\bin\libgobject-2.0-0.dll
29# _g_signal_emit in C:\Program Files (x86)\Inkscape\bin\libgobject-2.0-0.dll
30# _gdk_surface_set_opaque_region in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
31# _gdk_win32_surface_get_handle in C:\Program Files (x86)\Inkscape\bin\libgtk-4-1.dll
32# _g_clear_list in C:\Program Files (x86)\Inkscape\bin\libglib-2.0-0.dll
33# _g_get_monotonic_time in C:\Program Files (x86)\Inkscape\bin\libglib-2.0-0.dll
34# _g_main_context_iteration in C:\Program Files (x86)\Inkscape\bin\libglib-2.0-0.dll
35# _g_application_run in C:\Program Files (x86)\Inkscape\bin\libgio-2.0-0.dll
36# 0x0000000000003F1E in C:\Program Files (x86)\Inkscape\bin\inkscape.exe
37# 0x00000000000010D9 in C:\Program Files (x86)\Inkscape\bin\inkscape.exe
38# 0x0000000000001436 in C:\Program Files (x86)\Inkscape\bin\inkscape.exe
39# _BaseThreadInitThunk in C:\WINDOWS\System32\KERNEL32.DLL
40# _RtlUserThreadStart in C:\WINDOWS\SYSTEM32\ntdll.dll
</pre>
<details><summary>System info</summary>
Inkscape 1.5-dev (77afd31, 2026-02-10, custom)
Compile (Run)
GLib version: 2.86.3
GTK version: 4.20.3 (4.20.3)
glibmm version: 2.86.0
gtkmm version: 4.20.0
libxml2 version: 2.15.1
libxslt version: 1.1.45
Cairo version: 1.18.4 (1.18.4)
Pango version: 1.56.4 (1.56.4)
HarfBuzz version: 12.3.0 (12.3.0)
Poppler version: 25.12.0
OS version: Windows 10 22H2
</details>
#### What should have happened?
...
Sample attachments:
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#### Version info
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```
Inkscape 1.5-dev (77afd31, 2026-02-10, custom)
```
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issue