monaco-editor version: 0.12.0
Browser: Google Chrome
OS: macOS
Steps or JS usage snippet reproducing the issue:
When disabling context menu (contextmenu: false), highlighting a text and right clicking it will open context menu with missing actions (Cut/Paste/Copy/Select All)

Hi I would like to take a look into this, could you assign this to me?
So just to clarify the missing actions (Cut/Paste/Copy/Select All), would still be available when (contextmenu: false)--is that correct?
When setting contextmenu: false text actions (copy, paste, etc..) are not available at all (even when highlighting a text)
this screenshot clarifies the issue better (reproduced on playground):

I don't want to use the custom Monaco menu so i set contextmenu: false. But i want the native browser menu to still be able to copy paste. Is this possible?
Unfortunately not. The editor is not a native <input> or <textarea>, so the browsers, when you right click, do not offer any actions typical for those inputs.
But ACE supports this.
Setting contenteditable="true" on the <div class="monaco-editor"> seems to bring copy and paste back to the native context menu (Mac Chrome) while surprisingly not harming everything else.
Setting
contenteditable="true"on the<div class="monaco-editor">seems to bring copy and paste back to the native context menu (Mac Chrome) while surprisingly not harming everything else.
Unfortunately in WebKit / Safari, this does allow editing the content of tooltips too (e.g. error messages, hover tooltips).
However, If (like me) you're only interested in WebKit (e.g. embedding in a native app), I can recommend adding a CSS rule:
.monaco-editor .view-line {
-webkit-user-modify: read-write-plaintext-only;
}
This will set contentEditable on every view-line individually (which contains only the syntax highlighted text, not the tooltips, etc). It's not perfect; the class names may change in the future. Just make sure to check if it's still working every time you update to a newer version of monaco.
It also seems compatible with Chrome (tested), Edge and Opera (both untested).
Most helpful comment
I don't want to use the custom Monaco menu so i set contextmenu: false. But i want the native browser menu to still be able to copy paste. Is this possible?