Cursor jitter when pressing a (append) command

Describe the bug
The cursor intermittently jitters/jumps when pressing a. The cursor seems to briefly moves to the wrong position before settling into the correct insert position. This does not occurs all the time, but enough to be distracting while typing.

To Reproduce
Steps to reproduce the behavior:

1. Open a new text file
2. Add some text (e.g: "The quick brown fox jumps over the lazy dog")
3. Put the cursor to a character (e.g: p)
4. Press a, if the issue does not appear, press a multiple time

Expected behavior
Smooth cursor movement to append position (like the i command)

Screen Recordings
Screen recording of the issue:

https://github.com/user-attachments/assets/d0b9fcbc-d7ac-4ca9-b28e-edce0bb59fd1

Screen recording of the behavior with cursorSmoothCaretAnimation set to on:

https://github.com/user-attachments/assets/a0e642ba-8c27-4fe4-988a-cce9a2db69b2

Environment:

• Extension (VsCodeVim) version: 1.30.1
• VSCode version: 1.104.1 (Stable), 1.105.0 (Insider)
• OS: macOS 15.7 (24G222)

Additional context

• cursorSmoothCaretAnimation masks the issue but unusable due to https://github.com/VSCodeVim/Vim/issues/3265
• Setting "extensions.experimental.affinity": {"vscodevim.vim": 1} does not solve the issue
• The issue is also present on VS Code Web
• I tested with all other extensions disabled. Both on Vscode, Vscode Insider and Vscode Web

Start by reproducing the jitter in VS Code using the a append command, comparing it with the i command and the recorded behavior. Trace the append-command cursor movement and verify the result across desktop and web; done when the cursor moves smoothly to the append position without the intermittent jump.