I suggest to switch to that fork, which seems more up-to-date and active.
-- Package-specific info:
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
ii fontconfig 2.11.0-6.4 amd64 generic font configuration librar
ii libfreetype6:a 2.6.3-3+b1 amd64 FreeType 2 font engine, shared li
ii libxft2:amd64 2.3.2-1 amd64 FreeType-based font drawing libra
Bug#821227: Are bugs being actually fixed upstream?
I would like to remind you guys of this bugreport about Libertinus fork from 2016.
Am I right to observe that Libertine upstream has not fixed a reported bug since 2014?
Judging by the sourceforce issue page there are even larger problems left unfixed. It does
not seem to be maintained anymore. Do you have any contact with upstream? Shall anyone spend
any time on reporting bugs or it's just a waste of time?
As for Libertinus: It seems to be actively maintained since 2016, looks like a very
much working alternative to Libertine.
Would you share your stance about this issue please?