False negative: "break through" not flagged to join into "breakthrough" despite having one or more linters for such errors

Then again, "to break through" is also a valid phrasal verb, so perhaps a phrasal verb vs compound noun linter should handle this?

Start by reproducing the attached “break through” example and examining the existing linters for compound-word errors. Determine how the checker distinguishes the valid phrasal verb from the compound noun, then verify that the reported case is handled without introducing false positives.

Written by the indexing model from the issue text.