a ?? 4 is formated to a ? ? 4 when save

[Jackiy]

Issue Type: Bug

a ?? 4 is formated to a ? ? 4 when I save the file.

VS Code version: Code 1.52.1 (ea3859d, 2020-12-16T16:34:46.910Z)
OS version: Windows_NT x64 10.0.19041

Extensions (19)

Extension	Author (truncated)	Version
npm-intellisense	chr	1.3.1
vscode-markdownlint	Dav	0.38.0
vscode-great-icons	emm	2.1.62
beautify	Hoo	1.5.0
nbpreviewer	jit	1.2.2
Angular2	joh	11.0.0
vscode-JS-CSS-HTML-formatter	lon	0.2.3
Angular-BeastCode	Mik	10.0.3
anaconda-extension-pack	ms-	1.0.1
python	ms-	2020.12.424452561
jupyter	ms-	2020.12.414227025
powershell	ms-	2020.6.0
debugger-for-chrome	msj	4.12.11
vscode-yaml	red	0.13.0
bootstrap4-vscode	the	6.1.0
vscode-icons	vsc	11.0.0
bootstrap-3-snippets	wcw	0.1.0
markdown-all-in-one	yzh	3.4.0
material-theme	zhu	3.9.12

A/B Experiments

vsliv368cf:30146710
vsreu685:30147344
openlogontheside:30221877
python763:30178808
python383:30185418
vspor879:30202332
vspor708:30202333
vspor363:30204092
python504:30227505
vswsl492:30211401
wsl2prompt:30224612
pythonvsdeb440cf:30237828
unusedpromptcf:30224611
folderexplorercf:30224615
openfilemenu:30224647
pythonvsded773cf:30236630
pythonvspyt859:30239450
vsjup459:30237187

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Prettier is not working (#112399)

[yume-chan]

Duplicate of HookyQR/VSCodeBeautify#368

[gjsjohnmurray]

/causedByExtension - thanks @yume-chan