confirming this behaviour as well. also "view page info" is freezing the browser. i just tried the version before, and this works fine (v63.0.3).
Start-Date: 2019-01-16 21:09:52 Commandline: apt upgrade [...] firefox:amd64 (63.0.3+build1-0ubuntu0.16.04.1, 64.0+build3-0ubuntu0.16.04.1) [...]
confirming this behaviour as well. also "view page info" is freezing the browser.
i just tried the version before, and this works fine (v63.0.3).
Start-Date: 2019-01-16 21:09:52 build1- 0ubuntu0. 16.04.1, 64.0+build3- 0ubuntu0. 16.04.1) [...]
Commandline: apt upgrade
[...] firefox:amd64 (63.0.3+