User Agent: Mozilla/5.0 (Android 12; Mobile; rv:109.0) Gecko/115.0 Firefox/115.0

Steps to reproduce:

1. Have a lot of tabs open. It doesn't matter if they are old tabs or recently opened. (this step may not be necessary to cause the bug, but it is when I've noticed the bug happening)

2. Open a new tab

3. Load any website in the tab.

4. Close Firefox (go to the app switcher and swipe to close Firefox)

5. Reopen Firefox

Actual results:

When Firefox opens, the tab is gone as if you never opened it. It instead loads the tab that was open prior to the most recent tab.

Expected results:

Firefox remembers the most recent tab and loads it

(In reply to avx5016 from comment #0)

User Agent: Mozilla/5.0 (Android 12; Mobile; rv:109.0) Gecko/115.0 Firefox/115.0

Steps to reproduce:

1. Have a lot of tabs open. It doesn't matter if they are old tabs or recently opened. (this step may not be necessary to cause the bug, but it is when I've noticed the bug happening)

2. Open a new tab

3. Load any website in the tab.

4. Close Firefox (go to the app switcher and swipe to close Firefox)

5. Reopen Firefox

Actual results:

When Firefox opens, the tab is gone as if you never opened it. It instead loads the tab that was open prior to the most recent tab.

Expected results:

Firefox remembers the most recent tab and loads it

Update: I noticed that another bug, probably related, happens. If I have visited multiple websites in a tab, then close Firefox, it will reopen on a previously visited website, not the website that I left off on.

Video of the bug: https://drive.google.com/file/d/1uBcslDumeEg1GnJ0OAer3NT75M-ZlZCd/view?usp=drivesdk

The severity field is not set for this bug.
:007, could you have a look please?

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Hey :avx5016, thanks for filing this ticket! As :jackyzy823 linked, there are two adjacent bugs related to having a lot of tabs open and then killing Firefox.