HarfBuzz has been updated and implemented at 5.3.0 alpha1+ for all platforms and now provides the default text layout engine. Use this Meta issue to alert/follow any regressions in LibreOffice impacted by HarfBuzz.
Steps to Reproduce:
Reproducible: Didn't try
User Profile Reset:
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
These issues moved from the HarfBuzz implementation issue bug 89870 as regressions, or just worse behavior than with the old layout engine:
bug 57672 - UI Combining diacritics breaking font preview in a dialo
bug 99351 - Square root of fraction doesn't display correctly
bug 103710 - Punctuation for CJK vertical layout using fallback is not rotating
bug 103725 - Wrong render of Math formula with HarfBuzz
Add reports of any new regressions again the HarfBuzz based common layout engine here.
*** Bug 104131 has been marked as a duplicate of this bug. ***
I have added Bug 106111 since it is very likely caused by the new layout engine.
Probably expecting to much of it, but Harfbuzz 1.6.3 should fix some of the issues reported here.