1892166 - In the latest Firefox version, when I click on "view recent browsing across windows and devices", when "open tabs" is selected, nothing appears. Screen is blank. Data DOES populate for other selections on the page.

Status: UNCONFIRMED

(Firefox :: Firefox View, defect)

Description

[Mary Valls]

Attachment: Firefox Bug 2024-04-17 234000.jpg

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:124.0) Gecko/20100101 Firefox/124.0

Steps to reproduce:

In the latest Firefox version, when I click on "view recent browsing across windows and devices", and I select "open tabs" nothing appears. Screen is blank. Data DOES populate for other selections on the page.

Actual results:

nothing appears. Screen is blank. Data DOES populate for other selections on the page.

Expected results:

I should see a list of all my open tabs. I WAS seeing them until the recent update occured.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::Firefox View' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Sarah Clements [:sclements]]

Hi Mary, can you update to the latest release (125.0.1) and check if this issue is still occurring?

Comment 3

[Negritas Sergiu, Desktop QA]

Hello! I have tried to reproduce the issue with firefox 127.0a1(2024-04-17) on Ubuntu 22.04 and Windows 10, unfortunately I wasn't able to reproduce the issue on my end.
Could you please answer the following questions in order to further investigate this issue:

1. Does this issue happen with a new profile? Here is a link on how to create one: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles
2. Does this issue happen in the latest nightly? Here is a link from where you can download it: https://www.mozilla.org/en-US/firefox/channel/desktop/
3. Do you have any addons installed? If yes could you please list them?

Comment 4

[Ray Kraesig [:rkraesig]]

Attachment: firefox view blank page.png

Also seen here, on Win10. (Screenshot attached.)

Confirmed in both a 2024-04-29 and 2024-06-04 Nightly build; restarting did not affect it. (If someone on the relevant team wants to investigate, I can poke around in the browser console; feel free to ping me on Slack.)

Comment 5

[Ray Kraesig [:rkraesig]]

(In reply to Negritas Sergiu, Desktop QA from comment #3)

Hello! I have tried to reproduce the issue with firefox 127.0a1(2024-04-17) on Ubuntu 22.04 and Windows 10, unfortunately I wasn't able to reproduce the issue on my end.
Could you please answer the following questions in order to further investigate this issue:

1. Does this issue happen with a new profile? Here is a link on how to create one: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

It does not. It also doesn't happen if I restart in Troubleshoot Mode. It does still happen if I manually disable all of my extensions and restart, though.

3. Do you have any addons installed? If yes could you please list them?

From this profile's addons.json:

• uBlock Origin 1.58.0
• Stylus 1.5.46
• Firefox Multi-Account Containers 8.1.3
• 1Password: Password Manager 2.24.2
• Firefox Translations 1.3.4buildid20230720.091143
• Reddit Enhancement Suite 5.24.6
• Zoom Extension 2.1.56
• Old Reddit Redirect 1.8.1
• uMatrix 1.4.4
• Teal Galaxy 1.0 (currently active theme)
• Night Moon and Water 2.0

Comment 6

[❌OOO Until Oct 7 ❌ Kelly Cochrane [:kcochrane]]

Negritas, are you able to reproduce given the above info? Sounds like it may be related to an addon potentially?

Comment 7

[Sam Foster [:sfoster] (he/him)]

(In reply to Ray Kraesig [:rkraesig] from comment #5)

It does not. It also doesn't happen if I restart in Troubleshoot Mode. It does still happen if I manually disable all of my extensions and restart, though.

That sounds like a pref or something rather than an addon if they are in fact all disabled. Would you be able to attach the output from about:support? We specifically want the "Important Modified Preferences" section and you could omit the rest. It might help to include the addons section too just to eliminate that as a factor.

Comment 8

[Ray Kraesig [:rkraesig]]

Attachment: 2024-06-10 about-support.txt

Attached in its entirety, just in case. (The preferences in question are near the top, so this shouldn't involve much in the way of sifting through irrelevancies.)

Comment 9

[Negritas Sergiu, Desktop QA]

Hello Ray!

Unfortunately I wasn't able to reproduce the issue on my end on Windows 10, Ubuntu 22.04 and MacOS 12.6 with the addons installed and following the STR from the description. I will add the QA-not-reproducible tag.

Comment 10

[Ray Kraesig [:rkraesig]]

Understood. It's still present and quite stable here, though; if anyone has any other investigative suggestions, I can (e.g.) poke around in the Browser Console.

Comment 11

[Mary Valls]

I was able to determine that there is a limit on number of open tabs that will be displayed in Firefox View under "Open Tabs". I haven't counted the tabs, but when started closing tabs and continued refreshing the Firefox View page, the "Open Tabs" view came back. It would be useful if Mozilla could define what that limiting # of Open Tabs is.

Comment 12

[❌OOO Until Oct 7 ❌ Kelly Cochrane [:kcochrane]]

(In reply to Ray Kraesig [:rkraesig] from comment #10)

Understood. It's still present and quite stable here, though; if anyone has any other investigative suggestions, I can (e.g.) poke around in the Browser Console.

Yeah I'd love to know if there's anything going on in terms of console errors when this issue occurs. We aren't currently limiting Open Tabs by any amount, so I think the fact that Mary was able to get their tabs to reappear by interacting with the UI in various ways was likely unrelated. It may be an issue with our virtual-list component which only renders a certain amount of items as can fit on the viewport, but that usually affects the list itself if problematic rather than the entire page with the heading and search input not showing.

Comment 13

[Ray Kraesig [:rkraesig]]

(In reply to ❌OOO Until Jun 17 ❌ Kelly Cochrane [:kcochrane] from comment #12)

Yeah I'd love to know if there's anything going on in terms of console errors when this issue occurs.

Nothing. The multiprocess browser console sometimes has unrelated errors, but nothing is generated by visiting that page. Meanwhile, the ordinary web console is completely silent and dark.

Comment 14

[❌OOO Until Oct 7 ❌ Kelly Cochrane [:kcochrane]]

Mary and/or Ray, are you able to tell me how many open tabs your have when you're able to see the issue?

Comment 15

[Ray Kraesig [:rkraesig]]

 > [...browserWindows()].flatMap(s=>s.gBrowser.tabs).length 
 < 835
 > [...browserWindows()].filter(s=>s.browsingContext.usePrivateBrowsing).flatMap(s=>s.gBrowser.tabs).length 
 < 98

(But note that this is about how many tabs I had in comment 5 when I confirmed that it worked when in Troubleshoot Mode.)