PCManFM-Qt does not respect systemw-wide Qt widget style

[thedoctar]

I wanted to have a dark theme for Lubuntu.

I installed a custom GTK theme called Ultimate-Plata-Dark-3.36 which is quite dark.

This only affected apps that used GTK.

As per the instructions in the LXQt Appearance Configuration window, I selected the 'gtk2' Qt style after install qt5-style-plugins.

Afterwards, apps such as qpdfview adopted the GTK theme.

*EXCEPT* PCManFM-Qt, which stubbornly persists in its original light theme.

How do I make PCManFM-Qt respect the system Qt Widget style?

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pcmanfm-qt 0.14.1-0ubuntu3
Uname: Linux 5.9.3-050903-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Mon Feb 22 15:52:08 2021
InstallationDate: Installed on 2020-05-11 (286 days ago)
InstallationMedia: Lubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: pcmanfm-qt
UpgradeStatus: No upgrade log present (probably fresh install)

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

In the title, & package the bug is reported against, you have said `pcmanfm-qt`, but in the description your refer only to `pcmanfm` which is a different program/package.

This maybe just a mistake, but pleasPcmane clarify.

`pcmanfm` is the old GTK2 program for LXDE.
`pcmanfm-qt` is a ported version that uses Qt5 started by the same developer PCMan for the LXQt desktop.

[thedoctar (thedoctar)]

I changed it. Actually lximage-qt also doesn't respect the theme.

[thedoctar (thedoctar)]

WAIT: When I turned my computer on today, everything had the correct theme!?!?!

Can anyone still reproduce this bug?

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

If it "fixed itself" perhaps a little log out/on was all that's needed. Marking as incomplete unless we have clear steps to reproduce.

[Launchpad Janitor (janitor)]

[Expired for pcmanfm-qt (Ubuntu) because there has been no activity for 60 days.]