I used them when they were released a while ago for the nightly version of Firefox, and actually in the stable channel we are in Firefox 130 and still no vertical tabs, does anyone know an aproximate version when they will be available for the stable channel?
Looks like there are lot of dependencies that are still not resolved. You can watch the current state of bug reports here: https://bugzilla.mozilla.org/show_bug.cgi?id=1894060
References (Depends on 21 open bugs)
Depends on: 1912388, 1912568, 1913510, 1915167, 1916553, 1918041, 1918068, 1919044, 1921951, 1921953, 1921959, 1924193, 1926575, 1927038, 1927422, 1927457, 1896623, 1910576, 1910946, 1911960, 1912391, 1913279, 1913437, 1914438, 1915862, 1916188, 1916941, 1916954, 1917785, 1918044, 1918208, 1918434, 1918726, 1920443, 1920575, 1921190, 1921336, 1922264, 1922307, 1922546, 1923041, 1923052, 1923301, 1923306, 1923363, 1924686, 1925577, 1927230, 1927329 1921081, 1927897, 1928116, 1893655, 1899598 1902032, 1905849, 1893656, 1899336, 1899346, 1899352, 1899599, 1901551, 1905869, 1906888, 1907058, 1909497, 1910203, 1910601, 1918608, 1920691, 1923367, 1924670 Dependency tree / graph Duplicates: 1698376 1683375 See Also: 1901802