[tor-bugs] #32019 [Applications/Tor Browser]: TB9: Address bar and hotkey broken if homepage is about:blank

[Tor Bug Tracker & Wiki]

#32019: TB9: Address bar and hotkey broken if homepage is about:blank
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 Reporter:  rustybird  |          Owner:  tbb-team
     Type:  defect     |         Status:  new
 Priority:  Medium     |      Component:  Applications/Tor Browser
  Version:             |       Severity:  Normal
 Keywords:  ff68-esr   |  Actual Points:
Parent ID:             |         Points:
 Reviewer:             |        Sponsor:
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 1. Extract a fresh TB9 (I tested it with
 [https://dist.torproject.org/torbrowser/9.0a7/tor-browser-linux64-9
 .0a7_en-US.tar.xz 9.0a7] and the [http://f4amtbsowhix7rrf.onion/tor-
 browser-builds/2019-10-08/nightly-linux-x86_64/tor-browser-linux64-tbb-
 nightly_en-US.tar.xz 2019-10-08 nightly] on Fedora Linux 30).

 2. Before the first start, set `about:blank` as the homepage:
    {{{
    export TOR_DEFAULT_HOMEPAGE=about:blank

    # alternatively:
    echo 'user_pref("browser.startup.homepage", "about:blank");'
 >>Browser/TorBrowser/Data/Browser/profile.default/prefs.js
    }}}

 3. Run `./start-tor-browser.desktop`, connect to Tor, and wait until the
 main browser window opens.

 **After typing an URL into the address bar, it cannot be confirmed with
 Enter.** (And autocomplete doesn't work either, e.g. "blog" is not
 completed to "blog.torproject.org/".) This seems to only affect the first
 start of a fresh TB9 installation.

 **If Ctrl+Shift+u (the hotkey for New Identity) is pressed while the
 address bar has focus, an underlined u is typed in.** This problem remains
 even after a restart.

 In contrast to #27427, the bug appears unrelated to NoScript - deleting
 the NoScript .xpi makes no difference. Workaround: `data:,` instead of
 `about:blank` as the homepage URL.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32019>
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