Trying to open an external link does nothing when the active tab is blank

[theultramage]

When I click on a link in Thunderbird, and Firefox is currently set to blank tab ("New Tab"), then the Firefox window gains focus, but nothing else happens. If I instead have a normal page open (or the Add-ons Manager), then the page will properly start loading in a new tab. Possibly a FF48 regression.

When the setting "Open links from external applications" is changed to "Current Tab", it does what it says. But the option "New Tab" misbehaves as described above.

I disabled all addons except tabutils to rule out an unintended interaction. Still happens.
I wasn't able to reproduce this in a clean XP VM, even after I copied my Firefox profile there.
ProcMon reports that the shell invokes the standard "firefox.exe -osint -url [url]" command.

[yfdyh000]

I once encountered this problem, but I haven't to debugging it.
What is your e10s (Multiprocess) state?
Re-set Firefox as default browser may be helpful.

[theultramage]

e10s is disabled; changing default to IE and back had no effect.
I got into this state by moving my FF47 win7_x64 profile to a win7_x86 laptop and using it for a month, then moving it back and updating everything to FF48. I'm not sure where to start debugging this.

[xuyuehang]

可以复现这个bug，具体步骤为：
1.在火狐窗口中，只保留空白标签页（1个或多个）
2.点击外部链接（比如qq面板中），以默认浏览器（火狐）打开
3.火狐的窗口只会被激活，但不会打开链接

已禁用其他扩展，未开启e10s，firefox48.0.2x86，win10
TUF为默认设置，外来链接设置为“新标签页“时出现这个bug

[xander13th]

When I click on a link in Thunderbird, and Firefox is currently set to blank tab ("New Tab"), then the Firefox window gains focus, but nothing else happens. If I instead have a normal page open (or the Add-ons Manager), then the page will properly start loading in a new tab

i have the same problem with external links and it also happens with "Super Start" and "Speed Dial [FVD]" (new tab replacements) on w7 32/64 + ff 48 x86/x64, w10 + ff 48 x64 (e10s is disabled)

[yfdyh000]

Fixed in 2017.02.04, please check it.

[theultramage]

For me, page loads (tab title changes), but doesn't render until I switch to another tab and back.

[xander13th]

same for me.
yfdyh000, please finish this most annoying bug :)

[yfdyh000]

Thanks for the report. I see it.