Page display issues related to tabs

• Regression

I've seen this on the admin pages and on the wiki edit page, which all have tabs. When the page first loads, the tabs are normal, but when I click a tab to change tab panes, when the tab pane displays, it doesn't open in its normal location. Instead, it is at the top of the page and the tabs themselves and page content above the tabs are, I guess, pushed up out of the viewport or otherwise aren't visible. This means no other tab can be clicked, the page-top save button isn't available, and so on. On the admin pages, if I change the class name of div class="admin-content" to something else in the browser web tools, then the top of the page drops down into view (becomes normal), so I guess the issue might involve that div or class somehow. I searched through adminui.css and default.css and don't see anything that would cause this, though.

I have one master site updated 2025-01-06 where the L&F tabs work normally, but at another master sited updated 2024-12-29 plus one that I just updated, clicking a tab moves the page content up so the top can't be seen or accessed. I'm using Edge on Windows, if that makes any difference.

The same thing happens on the wiki edit page. It displays normally at first but when I click the Categories or Properties tab, then again the tab pane displays at the page top, blocking access to the tabs and other page content above the tabs. Actually, the wiki edit page is messed up in several ways, so this may be a separate issue. For example, the fullscreen textarea button doesn't seem to work right, either full screen when I didn't want it to be, such as when I first access the tab pane, or not full screen when I try to activate it. Also, the "Change diff styles" selector that is used to compare wiki page versions on the pagehistory page is being displayed on the edit page, where it doesn't belong.

This bug has been demonstrated on show2.tiki.org

Please demonstrate your bug on show2.tiki.org

This bug has been demonstrated on show.tikiwiki.org

Please demonstrate your bug on show.tikiwiki.org