Panic when running vsplit: filename

[Woolworths]

Summary

cd into my dotfiles directory.

Running :vs README.md panics and crashes helix.

Reproduction Steps

I tried this:

1. cd dotfiles
2. hx
3. :vs README.md

I expected this to happen:
File opens in a vertical split.

Instead, this happened:
Helix panics.

Helix log

~/.cache/helix/helix.log

please provide a copy of `~/.cache/helix/helix.log` here if possible, you may need to redact some of the lines

2022-07-22T22:59:31.931 helix_view::editor [ERROR] Failed to initialize the LSP for source.md { LSP not defined }
2022-07-22T23:00:08.416 helix_view::editor [ERROR] Failed to initialize the LSP for source.md { LSP not defined }
2022-07-22T23:02:42.602 helix_view::editor [ERROR] Failed to initialize the LSP for source.md { LSP not defined }

RUST_BACKTRACE=1 hx:

thread 'main' panicked at 'no entry found for key', helix-view/src/document.rs:956:10
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic_display
   3: core::panicking::panic_str
   4: core::option::expect_failed
   5: helix_view::view::View::offset_coords_to_in_view
   6: helix_view::editor::Editor::_refresh
   7: helix_view::editor::Editor::open
   8: helix_term::commands::typed::vsplit
   9: helix_term::commands::typed::command_mode::{{closure}}
  10: <helix_term::ui::prompt::Prompt as helix_term::compositor::Component>::handle_event
  11: helix_term::compositor::Compositor::handle_event
  12: helix_term::application::Application::handle_terminal_events
  13: helix_term::application::Application::event_loop_until_idle::{{closure}}
  14: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
  15: std::thread::local::LocalKey<T>::with
  16: tokio::park::thread::CachedParkThread::block_on
  17: tokio::runtime::thread_pool::ThreadPool::block_on
  18: tokio::runtime::Runtime::block_on
  19: hx::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

Platform

macOS

Terminal Emulator

Alacritty

Helix Version

helix 22.05 (19e51c8)

[sonicrules1234]

I got this bug too, but on Arch Linux.

[AceofSpades5757]

I have this issue on Windows running version 22.05 (19e51c82)

[AceofSpades5757]

It looks like the bug was introduced with this commit: 19b7864
The version before didn't have this issue.