lapce panics on start

[Unisa-Merni-392]

Lapce Version

I've tried both, one compiled from git repo ( lapce-9999-r4 on my Gentoo) and the binary that I downloaded from your site.
Both panic at the same spot

System information

Gentoo, profile default/linux/amd64/23.0/hardened/selinux
Using sway+wayland on radeon graphics (amdgpu)

Describe the bug

lapce silently panics on start.
I compiled it in debug mode and left binaries unstripped, so that I can get the stack.
So "lapce -w" gets me:

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2024-05-01T19:28:07.545881Z ERROR lapce_app::panic_hook: thread main panicked at | file://.//var/tmp/portage/app-editors/lapce-9999-r4/work/cargo_home/gentoo/floem-cosmic-text/src/buffer_line.rs:192:41
0: lapce_app::app::panic_hook::{{closure}}
1: std::panicking::rust_panic_with_hook
2: std::panicking::begin_panic_handler::{{closure}}
3: std::sys_common::backtrace::__rust_end_short_backtrace
4: rust_begin_unwind
5: core::panicking::panic_fmt
6: core::option::expect_failed
7: floem_cosmic_text::buffer_line::TextLayoutLine::shape
8: floem_cosmic_text::buffer_line::TextLayoutLine::layout
9: floem_cosmic_text::buffer::TextLayout::shape_until
10: floem_cosmic_text::buffer::TextLayout::set_text
11: floem_cosmic_text::buffer::TextLayout::new
12: floem_reactive::signal::ReadSignal::with_untracked
13: <floem_reactive::effect::Effect<T,F> as floem_reactive::effect::EffectTrait>::run
14: floem_reactive::scope::with_scope
15: floem_reactive::effect::run_initial_effect
16: floem_reactive::effect::create_effect
17: floem_reactive::scope::with_scope
18: lapce_app::window_tab::WindowTabData::new
19: lapce_app::window::WindowData::new
20: lapce_app::app::AppData::app_view
21: core::ops::function::FnOnce::call_once{{vtable.shim}}
22: floem_reactive::scope::with_scope
23: floem::window_handle::WindowHandle::new
24: floem::app_handle::ApplicationHandle::new_window
25: lapce_app::app::launch
26: std::sys_common::backtrace::__rust_begin_short_backtrace
27: std::rt::lang_start::{{closure}}
28: std::rt::lang_start_internal
29: main
30:
31: __libc_start_main
32: _start

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Additional information

It looks like floem_cosmic_text fails to set the default font shape. Do I need to have some specific font package installed ? 🙄

[Unisa-Merni-392]

I just managed to make it work by emerging media-fonts/freefont
(homepage: https://savannah.nongnu.org/projects/freefont/ )