unknown tagged argument ':notcontains' for the deleteheader command

Prerequisites

[X] I have searched for duplicate or closed issues
[X] I can recreate the issue with all plugins disabled

Describe the issue

Hi,

I'm running Roundcube 1.6.8 with the managesieve plugin and I stumbled upon this error:

roundcube: line 10: error: unknown tagged argument ':notcontains' for the deleteheader command (reported only once at first occurrence). roundcube: error: validation failed.

It happens if you create a filter with the action Remove header from the message:

Header name: From
Header value patterns: leave empty
match type: not contains
comparator: default
Header occurence/position: Leave empty + from start

Match type contains surprisingly does work with the same settings.

Is this a roundcube bug or a bug on sieve server side?

What browser(s) are you seeing the problem on?

Chrome

What version of PHP are you using?

8.1

What version of Roundcube are you using?

1.6.8

JavaScript errors

No response

PHP errors