Pe̍h-ōe-jī (POJ) needs two specific diacritics: combining dot above right (U+0358) and combining vertical line above (U+030D), I copied the following string into LibreOffice Writer, both of them does not works as expected.
O͘Ó͘Ò͘Ô͘Ō͘O̍͘o͘ó͘ò͘ô͘ō͘o̍͘ A̍E̍I̍O̍U̍a̍e̍i̍o̍u̍
<img alt="Screenshot.PNG" src="/liberation-fonts/issue/raw/e89256f681290ea59900f55299622d7ef8eb6c2e511af6429602b059f7a39c0b-Screenshot.PNG" />
Here is a sample from Taiwan Church News:
https://commons.wikimedia.org/wiki/File:Tai-Oan-Hu-Sia-Kau-Hoe-Po.jpg
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