+Title:
+Line 1, column 26, Rule ID: PT_DIACRITICS_REPLACE
+Message: ‘para’ é uma expressão estrangeira importada cuja grafia tem diacríticos. É preferível escrever ‘Pará’
+Suggestion: Pará
+Nada melhor que um banho para nos acordar.
^^^^
I tried to disable it by finding: PT_DIACRITICS_REPLACE
False positives started to appear because the rule was supposed to be case-insensitive but due to a bug that never worked (see [en] EN_DIACRITICS doesn't work anymore · Issue #2051 · languagetool-org/languagetool · GitHub). I’ve turned the rule off by default for now so we can hopefully fix it. Instead of just turning on case-sensitivity again, maybe you could go over the list (pt/diacritics.txt) and see whether it needs to be cleaned up?
AbstractSimpleReplaceRule2 has been fixed so that it’s now case-insensitive.
If you implement a sub class of it and you want the old behavior, please implement isCaseSensitive() and have it return true. (Issue #2051)