GitDiffMargin.ShowPopup shortcut not working in VS2019

[AndrewIntegral]

Versions

• Git Diff Margin version: 3.12.1
• Visual Studio version: 2019 (v16.11.32)

What happened

1. Assigned keyboard shortcut e.g. ctrl-alt-d to "GitDiffMargin.ShowPopup", tried for both "Text Editor" and "Global"
2. When pressing shortcut, nothing happens. Popup does not appear, nothing occurs.

Steps to Reproduce

Steps to reproduce the behavior:

1. Assign keyboard shortcut e.g. ctrl-alt-d to "GitDiffMargin.ShowPopup" for either/both "Text Editor" and "Global"
2. Press shortcut in code with curcor in a line showing a diff marker.

Expected behavior

GitDiffMargin popup should appear on left, same as clicking on the diff marker, as per shortcut entry suggests.

Screenshots

Cursor is on a line showing a diff. Pressing the keyboard shortcut at that point does not show the popup.

Clicking the diff marker with the mouse does show the popup, it is working fine apart from the keyboard shortcut.

Logs

https://gist.github.com/AndrewIntegral/ada732cd504aa1f81e8dd7e89a50fb64
I spotted a line containing "Could not load file or assembly 'GitDiffMargin.Impl"

Additional context

none

Thanks!