Separator not working for list tool for PCRE patterns

[lannymcnie-gg]

The tokenizer appears to work for the pattern (highlights the results correctly), but the List tool either ignores the separator, or omits the captured groups.

Scenario A: Results work, separator is missing.
Pattern: \[\K((?:EN|PLATENG|AI|INFOSEC)-[0-9]*)(?=.*)/gm

https://regexr.com/7ij75

Scenario B: Separator work, results are missing
Pattern: \[((?:EN|PLATENG|AI|INFOSEC)-[0-9]*)(?=.*)/gm

Seems to be limited to PCRE, as the JavaScript equivalent works fine (though the keep-out token only works in PCRE)