Why is robot framework returning 'While' is a reserved keyword

I'm trying to setup a simple while loop, but I keep getting this error:

'While' is a reserved keyword.

Robot Framework 4.1.3 (Python 3.8.10 on linux)

For sanity, I stripped everything out and created the following test with examples straight from the robotcorp docs (https://robocorp.com/docs/languages-and-frameworks/robot-framework/while-loops)

While.robot

*** Settings ***

*** Variables ***
@{ROBOTS}=        Bender    Johnny5    Terminator    Robocop

*** Keywords ***

*** Test Cases ***

Loop Over A List Of Items And Log Each Of Them
    FOR    ${robot}    IN    @{ROBOTS}
        Log    ${robot}
    END

Testing While Loop
    ${x}=    Set Variable    ${0}
    WHILE    ${x} < 3
        ${x}=    Evaluate    ${x} + 1
        IF    ${x} == 2
            CONTINUE    #  Skip this iteration.
        END
        Log    x = ${x}    # x = 1, x = 3
    END

The result:

$ robot tests/While.robot 
==============================================================================
While                                                                         
==============================================================================
Loop Over A List Of Items And Log Each Of Them                        | PASS |
------------------------------------------------------------------------------
Testing While Loop                                                    | FAIL |
'While' is a reserved keyword.
------------------------------------------------------------------------------
While                                                                 | FAIL |
2 tests, 1 passed, 1 failed
==============================================================================

Am I missing something or is this broken?