yyp behaviour does not match vim in emacs-30.2-1 GUI

[Bujiraso]

Expected

Vim and evil match when typing yyp

Actual

Evil splits the line at the current cursor position instead of properly creating a new line

Steps to Reproduce

1. Copy https://github.com/emacs-evil/evil?tab=readme-ov-file#installation into a file
2. Run emacs -Q that-file.el and M-x eval-buffer RET
3. Type yyp anywhere
4. Observe

Comparison

emacs 30.2-1 + evil (version 1.15.0 from MELPA)

Screenshot Description

No new-line is properly created before pasting, splitting the current line. The comment "Download Evil" then ends up stretched vertically.

vim -u NONE (gvim 9.2.0204-2) and expected result

Screenshot Description

A new-line is created before pasting, not splitting the current line. All lines match.

Environment

SDDM running Sway on Arch (Wayland)

Additional Test Cases

Emacs Execution Mode	Result	Description
standard GUI mode (this bug)	fail	Evil splits the line (at the cursor position) instead of creating a new line before pasting.
term-mode (emacs -nw)	pass	yyp matches
emacs-wayland (emacs with PGTK)	mixed	different bugs block clipboard use but yyp appears to match more closely

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Can anyone else confirm the reproducibility?