Search and replace using capture group does not work

[mjmayer]

Describe the bug
Search and replace when using capturing groups does not work

To Reproduce
Text in file: Hello World
Search and replace command: s/Hello \(World\)/\1
Results: No regex match

Expected behavior
In vim 7.4.629 with the text Hello World, the search and replace command, s/Hello \(World\)/\1, yields the resulting text of World

Environment
Extension version: 1.12.4
VS Code version: Code 1.41.1 (26076a4de974ead31f97692a0d32f90d735645c0, 2019-12-18T15:04:31.999Z)
OS version: Linux x64 5.0.0-32-generic

[J-Fields]

Probably related to #3996

[mjmayer]

This does look like it is related to using the javascript regex. I was able to get the search and replace working with this command: s/Hello (World)/$1.

[J-Fields]

Closing as duplicate of #3996