https://connect.mozilla.org/t5/discussions/ff-nightly-142-0a1-2025-07-05-64-bit-tab-group-behavior/m-p/100157#M38934 <P>I really appreciate the tab group feature.&nbsp; I have 4 tab groups with 3-4 tabs in each group.&nbsp; It make a huge difference when I'm on my lap top and I'm switching back and forth between sites.&nbsp; A few days ago (I'm sorry I can't be more specific) I started noticing a different tab group behavior.&nbsp;&nbsp;</P><P>When FF starts up, all groups are collapsed with a new blank start page, which is normal and what I have it set up to do. When I open up a group to access a tab under that heading the group doesn't fully collapse when I close it.&nbsp; The last tab I was accessing stays in view and doesn't get hidden beneath the group header.&nbsp; If I open a new blank start page, the formerly exposed tab will collapse into the proper group. Something similar also happens when I go to another group and check one of the tabs there.&nbsp; The formerly exposed tab collapses properly when the new group opens and I click one of the tabs in this group. But the last tab I accessed in that group remains in view and doesn't collapse.&nbsp;&nbsp;</P> Sun, 06 Jul 2025 18:35:21 GMT datgrl 2025-07-06T18:35:21Z https://connect.mozilla.org/t5/discussions/ff-nightly-142-0a1-2025-07-05-64-bit-tab-group-behavior/m-p/100157#M38934 <P>I really appreciate the tab group feature.&nbsp; I have 4 tab groups with 3-4 tabs in each group.&nbsp; It make a huge difference when I'm on my lap top and I'm switching back and forth between sites.&nbsp; A few days ago (I'm sorry I can't be more specific) I started noticing a different tab group behavior.&nbsp;&nbsp;</P><P>When FF starts up, all groups are collapsed with a new blank start page, which is normal and what I have it set up to do. When I open up a group to access a tab under that heading the group doesn't fully collapse when I close it.&nbsp; The last tab I was accessing stays in view and doesn't get hidden beneath the group header.&nbsp; If I open a new blank start page, the formerly exposed tab will collapse into the proper group. Something similar also happens when I go to another group and check one of the tabs there.&nbsp; The formerly exposed tab collapses properly when the new group opens and I click one of the tabs in this group. But the last tab I accessed in that group remains in view and doesn't collapse.&nbsp;&nbsp;</P> Sun, 06 Jul 2025 18:35:21 GMT https://connect.mozilla.org/t5/discussions/ff-nightly-142-0a1-2025-07-05-64-bit-tab-group-behavior/m-p/100157#M38934 datgrl 2025-07-06T18:35:21Z https://connect.mozilla.org/t5/discussions/ff-nightly-142-0a1-2025-07-05-64-bit-tab-group-behavior/m-p/100165#M38936 <P>You should expect things to break regularly in Nightly. You also should report it as a possible [bug](<A href="https://bugzilla.mozilla.org/enter_bug.cgi/" target="_blank">https://bugzilla.mozilla.org/enter_bug.cgi/</A>). If you do, please post the link to it here.</P> Sun, 06 Jul 2025 20:59:43 GMT https://connect.mozilla.org/t5/discussions/ff-nightly-142-0a1-2025-07-05-64-bit-tab-group-behavior/m-p/100165#M38936 siffemcon 2025-07-06T20:59:43Z