1197600 - Restoring closed tab when the only opened tab is about:newtab silently closes that new tab, losing the user-entered search keywords

Status: NEW

(Firefox :: Tabbed Browser, defect)

Description

[arni2033]

STR:   (Win7, Nightly 43.0a1 (2015-08-20))
1. Open http://example.org in a new window (you can click this link holding Shift)
2. Make sure that in the opened window there's only 1 tab - example.org. Otherwise close other tabs.
3. Press Ctrl+T to open about:newtab
4. Close the tab with example.org (make sure that only opened tab is about:newtab)
5. Type something on about:newtab search or in Location bar in that tab
6. Press Ctrl+Shift+T to restore "example.org" tab

Result:       about:newtab closed and all your input is deleted
Expectations: Just restore the "example.org" so that user got 2 tabs: "example.org" and "about:newtab"

Note:         (!) If in Step 3 you open more than 1 newtab, then everything works as expected!