[bug] JS/TS `Format Selection` can delete comments

[RedCMD]

open a javascript or typescript file
create a block comment in such a way that a space will be inserted next to it when formatting

example:

const test/* comment */=5

select any part of the comment (except the ending /)
right click => Format Selection
the comment gets deleted ❌
const test =5

[jrieken]

It looks like the issue is caused by one of your installed extensions. All extensions execute together on a single nodejs process, so in order to narrow down the possible problematic extension, please try the following:

• run F1 > Help: Start Extension Bisect
• (this will restart VS Code with half of your extensions disabled)
• try to do the steps which reproduce the problem
• if the problem reproduces, click "This is bad" (this narrows down the problematic extension to the half which was enabled)
• if the problem does not reproduce, click "Good now" (this narrows down the problematic extension to the half which was disabled)
• these steps will repeat until the problematic extension is found

initial	step	final

[RedCMD]

I've just tried in the latest Insiders release with no extensions installed and with blank settings
(.zip install with a blank data folder)

[mjbvz]

Confirmed with TS 5.4.2. Example selection which causes this: st/* comment