macOS Safari also has fun tab bugs.

If you have a window with only one tab in it, and drag that tab to another window to merge them, the window disappears and they merge... right? Nope, if you look in your Windows menu, you now have a phantom window with no tabs in it that you have to reveal and close manually.

Randomly when I go to close a tab it will say "you have 2 tabs selected, do you want to close both". I didn't even know selecting multiple tabs was a feature, so OK maybe I had held down shift while switching tabs at some point? Nope, switching tabs (to deselect any tabs) doesn't change it, it still thinks I have some phantom tab selected somewhere.

These have both been there for years.

Yep.

And there are even more macOS Safari bugs. One is that history search won't work; you'll can type in the search bar but it won't filter the list. At least a few years old. Another bug I've been getting for a few years is that sometimes I'll launch Safari and some tabs will be blanked out, often pinned tabs. No URL in the bar, no back button, the site is just gone and only a blank tab remains.

Another one is text input. Type a long enough piece of text in a website's text box and eventually it'll get messed up, or your text will be partly duplicated, or the box will be half-broken and you need to copy your text, refresh the page and paste it back before continuing.

Bookmarks sync is still an unreliable train wreck. Sometimes they'll be moved out of folders and into the bookmarks menu. Sometimes they're gone and you've lost them, which has never happened in any other browser.

And of course, Safari is the only modern browser where I still get infrequent browser crashes (not tab crashes). Something rarer on Chrome and Firefox than a lottery win.