The min-width / contain are as usual to allow elements to shrink under
their intrinsic size. You can only see its effects with relatively thin
windows (or with a very large number of tabs in the tabstrip case).

Making it work in the browser area is blocked on making splitters work
on non-XUL boxes (so that DevTools can be resized), or replacing those
splitters with something else. I'll look at that next.

These fix rendering or test issues with flex emulation, but don't change
rendering without, so can land separately.

https://hg.mozilla.org/mozilla-central/rev/7d7d8d037b0d

https://hg.mozilla.org/mozilla-central/rev/fb32775d2def

Backed out changeset fb32775d2def as requested by dev. Backout link: https://hg.mozilla.org/integration/autoland/rev/4a24cecdad7190433bc76f853a9519c1e1e63447

https://hg.mozilla.org/mozilla-central/rev/aa325161aae5

Just updated to today's build after the landing of this path, the issue of huge drop lists is back, so the problem is not fixed.
crash report: Firefox 108.0a1 Crash Report [@ webrender::render_api::window_size_sanity_check ]

Build ID 20221018094831
change set; https://hg.mozilla.org/mozilla-central/rev/826073b561e026d8fbc6a8354081db59727d9f33

bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1705002

(In reply to Jim Jeffery not reading bug-mail 1/2/11 from comment #13)

Just updated to today's build after the landing of this path, the issue of huge drop lists is back, so the problem is not fixed.
crash report: Firefox 108.0a1 Crash Report [@ webrender::render_api::window_size_sanity_check ]

Build ID 20221018094831
change set; https://hg.mozilla.org/mozilla-central/rev/826073b561e026d8fbc6a8354081db59727d9f33

A little more context in bug 1705002 - Jim, can you link to your crash report on crash-stats please?

(In reply to Jim Jeffery not reading bug-mail 1/2/11 from comment #13)

Just updated to today's build after the landing of this path, the issue of huge drop lists is back, so the problem is not fixed.
crash report: Firefox 108.0a1 Crash Report [@ webrender::render_api::window_size_sanity_check ]

Which menu and on which OS?

(In reply to Emilio Cobos Álvarez (:emilio) from comment #15)

(In reply to Jim Jeffery not reading bug-mail 1/2/11 from comment #13)

Just updated to today's build after the landing of this path, the issue of huge drop lists is back, so the problem is not fixed.
crash report: Firefox 108.0a1 Crash Report [@ webrender::render_api::window_size_sanity_check ]

Which menu and on which OS?

The list-box is on a site that requires a login and being a member to the ARRL (Amateur Radio Relay League)
There is an option to 'find call' that you can check if they use the logbook on the ARRL site. That list-box usually lists the last 6 lookups.
The list is now over a full page tall and after 2-3 seconds crashes the entire browser.

Oh, so a <select> menulist? That's useful, can try to repro. Also, what about the OS? Is this on Linux, macOS or Windows? Thanks again.

(In reply to :Gijs (he/him) from comment #14)

(In reply to Jim Jeffery not reading bug-mail 1/2/11 from comment #13)

Just updated to today's build after the landing of this path, the issue of huge drop lists is back, so the problem is not fixed.
crash report: Firefox 108.0a1 Crash Report [@ webrender::render_api::window_size_sanity_check ]

Build ID 20221018094831
change set; https://hg.mozilla.org/mozilla-central/rev/826073b561e026d8fbc6a8354081db59727d9f33

A little more context in bug 1705002 - Jim, can you link to your crash report on crash-stats please?

Not sure how to link crash report, here are links to my crashes:
https://crash-stats.mozilla.org/report/index/558b1630-d095-4e70-a15a-5da060221018
https://crash-stats.mozilla.org/report/index/dccbe237-549d-4f85-98f9-f932a0221018
https://crash-stats.mozilla.org/report/index/af3a92db-dbe1-47ab-88f4-c80f30221018

(In reply to Emilio Cobos Álvarez (:emilio) from comment #17)

Oh, so a <select> menulist? That's useful, can try to repro. Also, what about the OS? Is this on Linux, macOS or Windows? Thanks again.

Oh, sorry - Windows 11 Home 22h2, fall release update for latest windows.

Can't reproduce that with something like this, which creates a very tall <select> list. The list is properly scrollable on macOS and Linux, at least, will check Windows in a bit:

<!doctype html>
<select id="s">
  <option>ABC</option>
</select>
<script>
  s.options.length = 9999;
</script>

Can't reproduce on windows, tried ~60k different options, and also I tried to make them really wide as well, with no avail. If you could privately mail me a way of accessing that page I'd be happy to dig into it, it may be due to some styling they use?

(In reply to Emilio Cobos Álvarez (:emilio) from comment #21)

Can't reproduce on windows, tried ~60k different options, and also I tried to make them really wide as well, with no avail. If you could privately mail me a way of accessing that page I'd be happy to dig into it, it may be due to some styling they use?

Email sent.

P.S. I don't know how to clear the list box on that site. The info there is not important so it could be deleted/removed or whatever, but I don't know how.