devhelp doesn't display any help pages

[Jeremy Bícha]

webkit2gtk 2.33.3-1ubuntu3

Test Case
---------
1. sudo apt install devhelp libgtk-3-doc
2. Open devhelp and click the GTK+ 3 Reference Manual link in the left sidebar.
3. The manual should show in the main view area.

What Happens
------------
The main viewing area stays blank.

Other Info
----------
I manually installed webkit2gtk from Ubuntu 21.04 and Devhelp worked normally again.
The Epiphany web browser works fine with the broken webkit2gtk version.
Ubuntu's packaging diverges slightly from Debian's. The changelog mentions some dependency changes and disabling lto.
I haven't done any further investigation.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sebastien Bacher (seb128)]

Testing on a daily impish now it seems to work, do you still get the issue?

[Jeremy Bícha (jbicha)]

Yes

[Sebastien Bacher (seb128)]

The Debian bug suggests it's due to user config and moving ~/.local/share/mime away workaround the issue, lowering the importance since it's not impacting most users

[Xavier Claessens (zdra)]

I can confirm that `mv ~/.local/share/mime ~/.local/share/mime-back` worked for me.