"paste without overriding" example not working for single character

Describe the bug
I use this example from the readme:

    "vim.visualModeKeyBindingsNonRecursive": [
        {
            "before": [
                "p",
            ],
            "after": [
                "p",
                "g",
                "v",
                "y"
            ]
        }
    ],

It works fine for most examples. But whenever I paste over a single character, it does not work. It does however work if I manually type out "pgvy". So for some reason the behaviour differs between manually writing characters and using the key remapping.

To Reproduce
Steps to reproduce the behavior:

1. Write "test x"
2. select "test" in visual mode
3. press y
4. select x in visual mode
5. press p
6. press p again
7. The resulting output is "test testx"

Worth noting is that the bug does not happen if I move around my selection before pasting. So if I press "bw" between step 4 and 5 the bug does not happen.

Expected behavior
The output should be "test ttestest"

log

[Extension Host] ModeHandler: debug: handling key=v.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v. mode=Normal. keybindings=normalModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v. mode=Normal. keybindings=normalModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=v. keySlice=v.
[Extension Host] ModeHandler: debug: handling key=e.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v,e. mode=Visual. keybindings=visualModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v,e. mode=Visual. keybindings=visualModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=v,e. keySlice=ve.
[Extension Host] Remapper: verbose: key=v,e. keySlice=e.
[Extension Host] ModeHandler: debug: handling key=y.
[Extension Host] Remapper: debug: trying to find matching remap. keys=y. mode=Visual. keybindings=visualModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=y. mode=Visual. keybindings=visualModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=y. keySlice=y.
[Extension Host] ModeHandler: debug: handling key=w.
[Extension Host] Remapper: debug: trying to find matching remap. keys=w. mode=Normal. keybindings=normalModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=w. mode=Normal. keybindings=normalModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=w. keySlice=w.
[Extension Host] ModeHandler: debug: handling key=v.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v. mode=Normal. keybindings=normalModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v. mode=Normal. keybindings=normalModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=v. keySlice=v.
[Extension Host] ModeHandler: debug: handling key=p.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v,p. mode=Visual. keybindings=visualModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=v,p. mode=Visual. keybindings=visualModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=v,p. keySlice=vp.
[Extension Host] Remapper: verbose: key=v,p. keySlice=p.
[Extension Host] Remapper: verbose: key sequences need to match precisely. precedingKeys=v.
[Extension Host] ModeHandler: debug: handling key=p.
[Extension Host] Remapper: debug: trying to find matching remap. keys=p. mode=Normal. keybindings=normalModeKeyBindingsMap.
[Extension Host] Remapper: debug: trying to find matching remap. keys=p. mode=Normal. keybindings=normalModeKeyBindingsNonRecursiveMap.
[Extension Host] Remapper: verbose: key=p. keySlice=p.

Environment (please complete the following information):

• Extension Version: 1.11.3
• OS Version: Windows_NT x64 10.0.16299
• VSCode version: 1.40.1

Reproduce the single-character paste sequence from the issue, then trace the Remapper and ModeHandler paths shown in the log for visual-mode p and the non-recursive pgvy mapping. Done means the reproduced case produces "test ttestest", while the manually typed sequence and the movement variant continue to work.