Titlebar in firefox and tor-browser

On OpenBSD 7.2 with Fvwm2 (fvwm2-2.6.9p1), Firefox (firefox-107.0) and
Tor-browser (tor-browser-11.5.6) both appear to not set the window
titlebar to the current tab's text.

Instead, the titlebar is always set to "Mozilla Firefox" or "Tor
Browser".

Is this expected? Is there any way to make the titlebar show the
current Tab's text?

I think OpenBSD 7.0 used to set the titlebar text as expected. I had a
look in /usr/ports/www/mozilla-firefox/, but couldn't see anything
obvious.

Thanks,

- Julian

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