Sunset with Version 55

Changes:

• actually, sunset after Firefox v55

Sunset with Version 54

Fixes:

• Let people close tabs with a 'Stay on Page' confirmation dialogue. (Fixes #1077.)

Chore:

• Restrict version between 51 and 54

Stop the Crashes

Fixes:

• Closing tabs on nightly no longer leaves space and crashes. (Fixes #1062.)

Filter (Again!)

Fixes:

• Restore spinners in various versions and in compact themes. (Fixes #1038.)
• Add custom attribute to the filtered out tabs to keep track of them. (Fixes #1043, #1045, #1044, #1046, #999, #1040.)

Filtering, Telemetry, FullScreen

• Don't permanently hide tabs if you close the window while filtering. (Fixes #1015.)
• Don't filter tabs on browser restart. (Fixes #1015.)
• Get F11 fullscreen and toggle working. (Fixes #951, #952.)
• Search stays visible until impossible.
• Tabs are permanently destroyed when filtered and browser closes.
• Add en-locale for those who are not set to en-US.
• Send ping when hotkey used to open and close sidebar (and focus and unfocus search as a side-effect). (Fixes #1002.)
• Pinned tabs are reversed on browser restart
• New tabs are now filtered in search. (Fixes #1004.)
• Send ping to telemetry when search is engaged.
• Child tabs open in correct position (reverse and pinned set).
• Enable scrolling in reverse mode when using a mouse. (Fixes #988.)
• Tabs are opened in correct positions in reverse. (Fixes #956.)

Welcome on board! 🛳

New Features:

• Simplified large look for new tabs.
• Onboarding tour.

Fixes:

• Add event_type field. (Fixes #939.)
• Tab animation fixes. (Fixes #918, #897.)
• Restore Places controllers after rearranging navigator-toolbox. . 🎉 (Fixes #583.)
• Always check toggledon attribute against 'true'.
• Tour videos had a black border.
• Toolbar customization.
• "Close Other Tabs" confirmation dialog. (Fixes #937.)
• Toggle top/side tabs focuses wrong tab. (Fixes #849.)
• Don't allow tabs opened from pinned tabs to open above them. (Fixes #932.)
• Pinned tabs get closed from 'Close Tabs Above' context option. (Fixes #928.)
• pinned tabs stay to the left when on top. (Fixes #927.)
• compatibility with Toolbar Position Changer add-on
• Rework pinned tabs. (Fixes #880, #888, #879, #817, #881.)
• Merge all tab resize requests in an event loop turn.
• updateWindowResizers doesn't exist sometimes.
• Splitter only accepts left clicks. (Fixes #900.)
• Scroll to open tab correctly after exiting the tab column
• Drag & scroll on reversed tabs.
• Tabs are opened in correct positions in reverse. (Fixes #956.)

(Testing release)

Lots of changes, described in the next release's notes.

Windows and Linux.

Fixes:

• Restore each window session on windows and linux.
• Restore persistant attributes for win and linux (not per window yet). (Fixes #818.)

Go somewhere else…

Fixes:

• Fix update links. (Fixes #727.)

Waffling…

New Features:

• Add a toggle to switch between side tabs and top tabs. (Fixes #691.)
• Add twenty new locales!
• Save TabCenter state per-window. (Fixes #391, #431, #528.)
• Reverse display order for "Open Tabs Above" option

Fixes:

• Reversed scroll.
• Print preview. (Fixes #791, #792.)
• Resize tabs on initing a tab.
• Upgrade will not reverse tabs. (Fixes #780.)
• Scroll jump to top of tab list. (Fixes #738, #693.)
• reversed mouse-wheel scrolling. (Fixes #776.)
• Errors.
• Remove popuphidden event listener on unload.
• Cleaner Animations. (Fixes #758.)
• Theme Changes in Win and Linux. (Fixes #476.)
• Mouse enter after toggle. (Fixes #759.)
• pin-button dynamic tooltiptext. (Fixes #751.)
• Typo, and change to array for filter.
• Visible tabs null on changing groups. (Fixes #754.)
• Restore urlbar value. (Fixes #739.)
• Don't allow tab to be hidden if there is no label. (Fixes #750, #752.)
• Check for tab.label before trying to match.
• Init pin-button with "shrink" tooltip. (Fixes #742.)
• Search input overflow. (Fixes #743.)
• Separate tabactions and tabgroupchange in clearfind. (Fixes #733.)
• Force pinned width to be half of window size, or less, when resizing the window. (Fixes #604.)
• Do not scroll selected tab into view on mouse out/in. (Fixes #730.)
• Right click on various buttons shouldn't activate them. (Fixes #472.)
• Only clear visible tabs when using tabgroups to switch.
• Re-work the Telemetry ping. 🎧
• Hide tab center in print preview mode. (Fixes #721.)
• refreshThumbAndLabel is now a function. (Fixes #718.)
• Filter only through visible tabs. (Fixes #692.)
• First tab title should not become "new tab". (Fixes #564.)
• Fix initial tab scrolling. (Fixes #698.)
• Allow autocomplete to expand to full width in windows fullscreen. (Fixes #705.)
• On change of overflow, keep scroll position the same. (Fixes #669.)
• Hide TC in windows fullscreen with sidebar open.