Firefox crashes after update to 6.7

Hi,

after updating OpenBSD 6.6 to 6.7 firefox tabs crash if a website is opened:
Gah. Your tab just crashed.
We can help!

Choose Restore This Tab to reload the page.

Reinstalled firefox does not help.

/var/log/messages says: May 28 10:08:00 x220 /bsd: firefox[5637]: pledge "id", syscall 195

After adding "id" to /etc/firefox/pledge.content everything works fine.

The same behavior if I start firefox under a new user.

Any hints or suggestions?

--f.