Many apps that are in the repository currently do NOT work in Libertine. Chromium is one of them - it crashes on launch and there currently is no fix.
The only desktop browsers I was able to get to semi-function in Libertine are Qupzilla and Dooble.
You might also be able to install Firefox via the instructions found at https://blog.arubislander.nl/2018/10/running-firefox-in-1604-libertine.html?m=1
&
https://github.com/jdonald/firefox-armhf/releases - but it is also very slow and prone to crashing in my experience.
Hopefully this will get fixed in some future updates - but currently UT developers are working on other priorities instead.
Best regards,
Steve Berson