mozilla-mobile
[regression] Dragging tabs in the tab tray forgets new tab tray order
Steps to reproduce
- Open some tabs.
- Open the tab tray.
- Long press and drag a tab to reorder your tab tray.
- Release the dragged tab.
- Wait a couple seconds.
- Tap focus to the dragged tab.
Expected behavior
The dragged tab should open the same page as before.
Actual behavior
One of your other tabs’ page will open. If you return to the tab tray, some other tabs may have changed order, too, such as tabs from the bottom row moving to the top.
Sometimes the tab tray order will change before your eyes after waiting a couple seconds in step 5 without needing step 6.
Device & build information
- Device: iPhone 15 Plus running iOS 17.6.1
- Build version: 9000 (45408)
- First seen version: This bug is a regression in 9000 (45230).
┆Issue is synchronized with this Jira Task
➤ Nishant Bhasin commented:
Andrei Bodea // Alina Moldovan could you please check if this is happening on latest main / v131 please
➤ Alina Moldovan commented:
We didn't manage to reproduce this issue at all.
Chris Peterson, could you please add a video to ensure we are following the correct steps? Thank you!
Here is a recording of the bug. I try to move the Mozilla.org tab in the tab tray, but when I open the tab it is still the original tab (example.com) in the tab tray location. In the video at time 0:10, I tap to open the Mozilla.org tab, but you can see the Mozilla.org tab jumps back to its original location and then the example.org tab opens.
I was NOT able to reproduce in Private Browsing mode, so maybe my profile’s tab metadata is corrupted? I don’t know what else would be different in Private Browsing mode.
https://github.com/user-attachments/assets/a4caebf4-df30-42c2-8e5f-20a0305a81bb
I was not able to reproduce it on the latest v9000 (45556) with iPhone 15 Pro (17.5). I also wanted to mention that based on the video it might be something related to the context menu that is displayed right when you long-tap on the tab and then move it, somehow the context menu is closed when the tab is moved but displayed for a few seconds.
I noticed the same bug on 45556 yesterday. I'm still able to reproduce it on 45786 today.
https://github.com/user-attachments/assets/f4267136-8f84-4af7-b7a2-dc66daae1e76
FWIW, I can no longer reproduce this bug. I'm currently using build 9000 (45824), but I reinstalled an older Nightly build and still couldn't reproduce. Maybe something change in my profile or current tab state?