STR: 1. Install "Firefox Multi-Account Containers" extension: https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/ 2. Open some pages in a container. 3. Set those sites to always open in that container. 4. Open more pages on those sites so the Multi-Account Containers extension will confirm that you want to keep opening those sites in that container. 5. Pin the tabs with those contained pages. 6. Restart Firefox. RESULT: Pinned tabs that are configured to always open in a specific container open in non-pinned tabs instead of pinned tabs. This bug is a regression in Firefox 67.0a1 (2019-03-04). I failed to bisect the regression: mozregression just pointed at the latest m-c commit, which is a test-only change that should not have caused a container tab regression: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a9bb4a23d4072a2735b50b577f9668728af06d30&tochange=8602628e7edaecadea855a64179b329da6ff1f20
Bug 1532498 Comment 0 Edit History
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STR: 1. Install "Firefox Multi-Account Containers" extension: https://addons.mozilla.org/en-US/firefox/addon/multi-account-containers/ 2. Open some pages in a container. 3. Set those sites to always open in that container. 4. Open more pages on those sites so the Multi-Account Containers extension will confirm that you want to keep opening those sites in that container. 5. Pin the tabs with those contained pages. 6. Restart Firefox. RESULT: Pinned tabs that are configured to always open in a specific container open in non-pinned tabs instead of pinned tabs.