Issues

• [Bug] Transparent background in "No Decoration" hover preview/tooltips

  bugneeds-triage
  piroor/treestyletab#3990 · Filter by author js740 opened on Oct 12, 2026

• [Bug] New Tabs not from Existing Tabs > Sibling of the current tab not working

  bugneeds-triage
  piroor/treestyletab#3989 · Filter by author gitowiec opened on Oct 10, 2026

• What setting could cause tabs closing on a click?

  bugneeds-triage
  piroor/treestyletab#3984 · Filter by author matru opened on Oct 6, 2026

• [Bug] [Nova] Colour of pinned tab's update indicator should match Firefox theme accent colour

  bugfixed
  piroor/treestyletab#3981 · Filter by author Fanolian opened on Oct 1, 2026
  4

• [Bug] Firefox 157 Broke Addon

  Firefox-issuehas-workaround
  piroor/treestyletab#3978 · Filter by author LookingForWayOut opened on Sep 29, 2026
  18

• [Bug] (Tree structure no longer being restored with Tab Session Manager)

  bughelp wantedworks for me
  piroor/treestyletab#3976 · Filter by author dheemanthkiran opened on Sep 28, 2026
  4

• [Bug] New window created by dragging tab out of TST sidebar extends offscreen

  bugFirefox-issue
  piroor/treestyletab#3962 · Filter by author jryans opened on Sep 5, 2026
  7

• [Bug] Smart Window does not work blank page

  bugFirefox-issue
  piroor/treestyletab#3945 · Filter by author tharlab opened on Aug 5, 2026
  4

• [Bug] 履歴からのウィンドウ復元時にタブの順序が正しくない

  bugpartially fixed
  piroor/treestyletab#3918 · Filter by author folio828 opened on Apr 21, 2026
  5

• [Bug] Errors in browser console likely caused by TST (Node.removeChild: Argument 1 is not an object etc.)

  bugpartially fixed
  piroor/treestyletab#3903 · Filter by author lenaschimmel opened on Mar 31, 2026
  1

• [Bug] Tab Label text-alignment/direction and overflow behavior doesn't match native tab bar

  bugin-progresspartially fixed
  piroor/treestyletab#3881 · Filter by author tcbbd opened on Mar 5, 2026
  19

• [Enhancement] Two improvements for Tab Groups in TST

  enhancementFirefox-issuepartially fixed
  piroor/treestyletab#3877 · Filter by author BugZappr opened on Mar 3, 2026
  4

• [Enhancement] Adding Firefox native "Add Note" function to TST tab context menu

  enhancementFirefox-issue
  piroor/treestyletab#3820 · Filter by author Coldblackice opened on Dec 18, 2025
  1

• [Enhancement] Support Firefox Split View

  enhancementFirefox-issuein-progress
  piroor/treestyletab#3806 · Filter by author omid opened on Nov 8, 2025
  30

• [Bug] Weird colors (again) on 4.2.5

  bugFirefox-issuehas-workaroundplatform specific
  piroor/treestyletab#3788 · Filter by author scarf005 opened on Sep 6, 2025
  4

• [Bug?] TST does not work with Firefox Extended Support Release

  bugworks for me
  piroor/treestyletab#3756 · Filter by author tcstech2025 opened on Jun 16, 2025
  8

• Ability to scroll through list of tabs with keyboard

  enhancementworks for me
  piroor/treestyletab#3720 · Filter by author trittico opened on Mar 25, 2025
  7

• [Bug] "Grouping tabs with spaces" snippet crops tab list

  enhancement
  piroor/treestyletab#3592 · Filter by author TheFou opened on Jul 17, 2024
  8

• Rewrite stylesheets with CSS Nesting Module

  piroor/treestyletab#3377 · Filter by author piroor opened on Aug 30, 2023

• Migrate to pointer events

  piroor/treestyletab#3363 · Filter by author piroor opened on Jul 20, 2023

• [Bug] Multi-Account Containers "Hide" action destroys trees.

  bugextension-compatibility
  piroor/treestyletab#3302 · Filter by author QORTEC opened on Mar 10, 2023
  6

• New tab is not opened with expected position and container, when it is opened with either + or Cntl T

  bugpartially fixed
  piroor/treestyletab#3291 · Filter by author infonut opened on Feb 10, 2023
  16

• Support Manifest v3

  piroor/treestyletab#2909 · Filter by author piroor opened on May 27, 2021
  14

• Use Crowdin (or similar) for translations

  has-workaroundin-progress
  piroor/treestyletab#2416 · Filter by author SammysHP opened on Nov 9, 2019
  9