index out of bounds crash when changing 3D view origin

[roym899]

Describe the bug
I got the crash below when changing the origin of the 3D view.

To Reproduce
Happened randomly. Not sure how easy it is to reproduce. I can try to reproduce it if the stacktrace is not sufficient.

Backtrace

[visualizer-2] thread 'ThreadId(1)' panicked at 'index out of bounds: the len is 0 but the index is 0'
[visualizer-2] re_viewer/src/ui/space_view_space_origin_ui.rs:143
[visualizer-2] stack backtrace:
[visualizer-2]    6: core::panicking::panic_fmt
[visualizer-2]              at core/src/panicking.rs:72:14
[visualizer-2]    7: core::panicking::panic_bounds_check
[visualizer-2]              at core/src/panicking.rs:180:5
[visualizer-2]    8: core::ops::function::FnOnce::call_once{{vtable.shim}}
[visualizer-2]    9: core::ops::function::FnOnce::call_once{{vtable.shim}}
[visualizer-2]   10: egui::ui::Ui::allocate_ui_with_layout_dyn
[visualizer-2]   11: egui::ui::Ui::allocate_ui_at_rect
[visualizer-2]   12: egui::grid::Grid::show_dyn
[visualizer-2]   13: re_viewer::ui::selection_panel::space_view_top_level_properties
[visualizer-2]   14: core::ops::function::FnOnce::call_once{{vtable.shim}}
[visualizer-2]   15: egui::ui::Ui::push_id
[visualizer-2]   16: re_viewer::ui::selection_panel::SelectionPanel::contents
[visualizer-2]   17: re_ui::ReUi::panel_content
[visualizer-2]   18: egui::containers::scroll_area::ScrollArea::show
[visualizer-2]   19: core::ops::function::FnOnce::call_once{{vtable.shim}}

Desktop (please complete the following information):

• OS: Ubuntu 22.04

Rerun version

rerun_py 0.15.0 [rustc 1.74.0 (79e9716c9 2023-11-13), LLVM 17.0.4] x86_64-unknown-linux-gnu release-0.15.0 bc8bcd0, built 2024-04-09T14:34:04Z