Mouse double click fails to select the word

[jonathanding]

Describe the bug
It should select the word if double clicking the mouse. However, the word is selected and then after several milliseconds, the selection is cancelled automatically. Furthermore, if double clicking in INSERT mode, after the word is selected, it would enter NORMAL mode besides cancel the selection.

To Reproduce

1. Open any document in editor, either in NORMAL mode or INSERT mode
2. Mouse to double click on a word
3. The word under click is selected (e.g. UI highlights this word), but after several milliseconds, the selection is gone away (UI restores the original). And if step 1 is in INSERT mode, it would enter NORMAL mode as well.

Expected behavior
The word under double click should be always selected

Environment (please complete the following information):
Vim Settings:
Use System Clipboard: True
Use Ctrl Keys: False
Override Copy: True
Surround: True

• Extension (VsCodeVim) version: 1.0.1
• VSCode version: 1.30.2
• OS: Windows 10

Additional context
VS Code version: Code 1.30.2 (61122f88f0bf01e2ac16bdb9e1bc4571755f5bd8, 2019-01-07T22:54:13.295Z)
OS version: Windows_NT x64 10.0.16299

Extension	Author (truncated)	Version
scrollkey	74t	1.0.1
better-toml	bun	0.3.2
vscode-eslint	dba	1.8.0
theme-monokai-pro-vscode	mon	1.1.9
python	ms-	2018.12.1
cpptools	ms-	0.20.1
Go	ms-	0.8.0
debugger-for-chrome	msj	4.11.1
color-highlight	nau	2.3.0
vscode-docker	Pet	0.5.1
vscode-icons	rob	8.0.0
rust	rus	0.5.3
cmake	twx	0.0.17
vscodeintellicode	Vis	1.1.2
vim	vsc	1.0.1

[jpoon]

I suspect it's a conflict with another extension. I can't repro with just VIM installed.

[jonathanding]

I just found that this is caused by a dictionary app which captures the selection event to show the translation for me as well. It's not caused by this extension and not its bug. Thanks!