ubuntu 19.10   Libreoffice Version: 6.3.5.2
Build ID: 1:6.3.5-0ubuntu0.19.10.1
CPU threads: 4; OS: Linux 5.3; UI render: default; VCL: gtk3;
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded
I installed english-office-help-english-us but when I select ‘Help - Libreoffice help’ (F1) I get this url displayed in Firefox and a blank screen;
file:///usr/share/libreoffice/help/index.html?Target=swriter/.uno%3AHelpIndex&Language=en-US&System=UNIX&Version=6.3
a list of /usr/share/libreoffice/help/;
ls
a11y-toggle.js  help2.js       idxcaption.xsl  main_transform.xsl  polyfills.js
default.css       help.html    idxcontent.xsl  media               prism.css
en-US              help.js      index.html      normalize.css       prism.js
fuzzysort.js    hid2file.js  languages.js    paginathing.js
Is it a bug?