This might be a bug and should then probably be filed somewhere else, but is related to the section on troubleshooting. My issue was this: Most, but not all, text in the menus and in the user interface was in an unreadable font - in English but with wrong symbols. Changing the system fonts as recommended in various places did not help. It turned out I had the language pack libreoffice-am (Amharic) installed by mistake. Removing this gave me back the intelligible menus. Version: 18.104.22.168
For me texts in menus and user interface suddenly appear ugly: readable though but very strange with half characters seemingly bold (always the same: a, e, i, o, g, p, s, t, y, etc). This strange display can come and go.
Also "File" and "Help" menus always look grey even when their entries are valid and click-able.
I tried the advice in troubleshooting (Type Andale Sans UI in the font box and choose Deja Vu Sans for the Replace with option. When done, click the checkmark. Then choose the Always and Screen only options in the box below. Click OK. You will then need to go to Tools > Options > LibreOffice > View, and uncheck "Use system font for user interface".) But with Libre Office Version: 22.214.171.124 there is no such thing as "Use system font for user interface". Trying with and without "Use hardware acceleration" and "Use anti-aliasing" has no effect.
language aids improvement
since mythes, hyphen and hunspell package are based on not much up-to-date language database (at least some of them e.g. Italian ones) I suggest to use LO extension which provides the same features but up-to-date e.g. for Italian language the plio.org association provides its own extension (http://extensions.libreoffice.org/extension-center/italian-dictionary-thesaurus-hyphenation-patterns) for this reason (IMHO) we should at least quote this possibility, this way of enabling language aids. --nTia89 (talk) 07:55, 4 July 2016 (UTC)
LibreOffice Impress presentation won't show slideshow and notes on correctly on multidisplay setup
Not sure if this is because of a bug or something, but if the slideshow won't show on your additional display in a multimonitor setup, you can add this to your i3 config file:
assign [class=".*libreoffice-impress.*"] 8 workspace 8 output eDP1 assign [class="Soffice"] 9 workspace 9 output HDMI1
Change the outputs to what you actually use. Check output of xrandr for this. When starting the presentation, you can move the notes/slides-window to the main display, and the slideshow will be visible underneath. Make the slideshow fullscreen. -- 15:02, 8 September 2016 Armandg
How to properly add appmenu (global menu) support to libreoffice?
When using the (integrated) global menu in Plasma 5, Qt 5 applications work out-of-box and Qt 4 won't work (keeps the menu) without appmenu-qt4. GTK applications will also keep the classical menu. However, the menu of libreoffice disappears. Renyuneyun (talk) 20:41, 15 October 2017 (UTC)