lubuntu kinetic live - firefox can't open libreoffice help file

Lubuntu kinetic jammy live QA-test on
- dell [optiplex] 780 (c2q-q9400, 8gb, amd/ati cedar radeon hd 5000/6000/7350/8350)

To re-create
- boot live media (Lubuntu kinetic)
- open libreoffice (any, but I used the base app here)
- seek help in menu or press F1

** Expected Results

Firefox opens with some helpful text

** Actual Results

Firefox opens at URL : file:///usr/share/libreoffice/help/index.html?Target=swriter/.uno%3AHelpIndex&Language=en-US&System=UNIX&Version=7.3

with message
---
File not found

Firefox can’t find the file at /usr/share/libreoffice/help/index.html?Target=swriter/.uno:HelpIndex&Language=en-US&System=UNIX&Version=7.3.

    Check the file name for capitalization or other typing errors.
    Check to see if the file was moved, renamed or deleted.
---

** Background Notes

This issue was reported before in jammy; but was marked RESOLVED. The directory though is different so something has changed.. I believe I'm thinking of https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1951210

I'm unsure if this is a firefox issue, Lubuntu config issue, or Libreoffice issue, but snap'd apps have issues due to confinement thus firefox issue is I fear suspected.

Reported also at https://bugzilla.mozilla.org/show_bug.cgi?id=1773414 though i suspect issue may not actually be with firefox snap.

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: libreoffice (not installed)
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.472
CurrentDesktop: LXQt
Date: Thu Jun 9 04:41:26 2022
LiveMediaBuild: Lubuntu 22.10 "Kinetic Kudu" - Alpha amd64 (20220608)
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)