[BUG] {{noop}} & {{newline}} do not work within assignment or conditional macros (Experimental Macro Engine)

Environment

Windows

System

Chromium 144.0.7559.44

Version

SillyTavern 1.18.0 'staging' (fe048f6bd)

Describe the problem

Straight from the documentation, we're given this example:

{{.myvar += {{noop}} | Second block}}

So if I input the following:

{{.myvar = foo}}{{.myvar += {{noop}} bar}}{{.myvar}}

I'd expect it to become this:

foo bar

But instead I get this:

foobar

Using {{newline}} in assignment macros seems to have the same problem. Not only that, but {{newline}} doesn't work within conditional macros.

If I input the following:

foo{{if 1}}{{newline}}{{/if}}bar

I'd expect it to become this:

foo
bar

But instead it becomes this:

foobar

Please tick the boxes

• I have explained the issue clearly, and I included all relevant info
• I have checked that this issue hasn't already been raised
• I have checked the docs
• I confirm that my issue is not related to third-party content, unofficial extension or patch. If in doubt, check with a new user account and with extensions disabled