Wrong validation on keyword arguments

[HelioGuilherme66]

Validation of keyword arguments is not respecting Robot Framework documentation: Named Only Arguments The below error should not occur:

The workaround is to use the Text Editor because uses RF validation rules.

Found Robot Framework version 3.1.2
RIDE 1.7.4b1dev1 using python version 3.7.4 with wx version 4.0.6 in win32.

See also #1523

[HelioGuilherme66]

Screenshot of example taken from User Guide, runs OK and validates OK on Text Editor. (Windows 7, Python 2.7.13/3.7.1, wxPython 4.0.7post2)

Source test case: test_varargs.robot.txt

[HelioGuilherme66]

Issue still present on RIDE v2.0.2.dev1 in Fedora Linux 36, Python 3.10.10, wxPython 4.0.7 (KDE Plasma 5 with darkmode, custom colors).

[HelioGuilherme66]

Fixed in 2.0.8dev3.