Odd spacing before hyphen (auto-hyphenation)

“Automatically” checked for hyphenation under ‘Text Flow’ in paragraph style (though I believe this also happens when using the hyphenation dialogue via Tools > Language > Hyphenation. On some lines, there is a space between the final character on the line and the inserted hyphen. This does not happen with every hyphen, please see linked screenshot 4th line from bottom ending in "Numer-. The word Numerals is hyphenated and an odd space separates the ‘r’ from the hyphen. Debain Stable 9.3 | LibreOffice installed from backports repo. Additional packages ‘libreoffice-gtk’ & ‘hyphen-en-us’ installed

Build ID: 1:5.4.4-1~bpo9+1
CPU threads: 8; OS: Linux 4.9; UI render: default; VCL: gtk2; 
Locale: en-US (en_US.UTF-8); Calc: group

note: I believe this is the same issue as described –here– many years ago and indeed the hyphen abuts text normally in ‘Print Preview’

Not sure if this is the cause: your zoom level seems to be 148% which does not fit easily with rounded font sizes. Check if your problem is a display (font renderer) artefact by setting zoom to congruous values like 50%, 100%, 150% or 200%.

I can see the problem with Linux Libertine G, but not with Libertinus Serif

Note that while both are forks of the original Linux Libertine fonts, only the Libertinus project is actively maintained and developed.

Libertinus does not seem to have the !! and !? ligatures, but it have a lot of bug fixes and a ton of OpenType features not present on the original project.

Excellent information, thanks. I made this template so long ago that it actually uses the Graphite version of Linux Libertine. Switching it over to the OpenType version (changing G to O in each styles) was a 10 minute job and fixed the issue. I’ll be sure to take a look at the Libertinus project.