Not all tabs opened when restoring a large session

[jmmerz]

I have a session with 107 tabs. When I save it, then shut down Firefox, restart and try to restore it, it brings back only a small number of tabs - 15 usually. Once or twice I think I saw it restore a few more like 16 or 17.

This is using Tab Session Manager v1.3.3 on Firefox 56.0.2.

I was concerned that some other extension may be interfering, so I tried again in Safe Mode installing it as a temporary extension and saw the same issue.

[grahamperrin]

Screen recording one of three

https://youtu.be/sQMGKq8EVp0 (unlisted), at 17:57 on the timeline:

• for a session with 1,485 tabs, Tab Tally shows 450 tabs loaded.

Firefox 56.0.2 (64-bit) on FreeBSD-CURRENT, Tab Session Manager 1.5.0.

Key frames from this screen recording

2017-11-19 08:32:32

2017-11-19 08:33:02

2017-11-19 08:33:06

2017-11-19 08:33:15

2017-11-19 09:05:26

[grahamperrin]

Screen recording two of three

https://youtu.be/mTQ43G8o5LY (unlisted), with a new, clean profile, after installing just two extensions – Tab Groups and Tab Session Manager – again:

• for a session with 1,485 tabs, Tab Tally shows 450 tabs loaded

– in that frame from the recording, we see 451 after I opened a new tab to install the third extension, Tab Tally.

[grahamperrin]

Five more frames from screen recording two of three

2017-11-19 12:51:49 frame

2017-11-19 12:52:17 frame

2017-11-19 12:52:18 frame a

2017-11-19 12:52:18 frame b

2017-11-19 12:52:30 frame

… What? Where the hell did that go? …

…

Screen recording three of three

https://youtu.be/GGjhtz11Rf8 (unlisted), a very short screen recording, focusing on a tab that might have been unexpectedly hidden during recording two (I need to take a closer look at recording two):

The HTML title and URL of the page in that tab:

• 1384515 - Provide an API for hiding and showing individual tabs
• https://bugzilla.mozilla.org/show_bug.cgi?id=1384515

[grahamperrin]

@sienori there's potentially much to take in, I don't expect you to sit watching screen recordings for hours :-) so please kick back if you would like more refined thoughts from me.

[laggarcia]

I think I am having a similar (or worse) issue. When I try to restore any session, no tabs are restored. The "Open" link apparently does nothing. I am using Firefox 57 on Fedora 27, with the Tab Session Manager version 1.5.0. Is this a separate issue? How can I collect information to help debug this?

[grahamperrin]

#22 (reference)

[sienori]

It should be improved by two changes.
789c4d4
501461d

[hklene]

@grahamperrin Where did you get that colorful yellow/gree bugzilla-report?

https://user-images.githubusercontent.com/192271/32993002-dea79e30-cd49-11e7-9193-860c4b073ab8.png

Sorry for offtopic, was just curious.

[grahamperrin]

@hklene https://discourse.mozilla.org/t/-/13310/17?u=grahamperrin Diigo Toolbar