<or> are limited to two items. But the syntax for
<or> having 3 tokens is allowed, but does not seem to work.
There’s https://github.com/languagetool-org/languagetool/blob/master/languagetool-language-modules/uk/src/main/resources/org/languagetool/rules/uk/grammar-barbarism.xml#L2075-L2078 and it seems to work, at least there’s an example sentence for this.
I gave it a try again. It works now. Why it did not work the first and second time, I would not know. Dutch would say it is ‘the eye of the master looking…’