save-as procedure is non-intuitive

originally posted at bugzilla https://bugzilla.mozilla.org/show_bug.cgi?id=1803706
but rejected as an "OS-default filepicker" problem.
The report was as follows:

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:107.0) Gecko/20100101 Firefox/107.0

Steps to reproduce:

I had a pdf open and wished to save it (download)

Actual results:

I was presented with a panel that had the name of the pdf at the top and a list of file-type compatible files in a box below.
I tried to modify the name of the pdf, but my modification was interpreted as a search term.

this is not just non-intuitive, but idiotic behavior

Expected results:

my modification should have been accepted

-----------------------------------------------------------------------------------

bugzilla's response was

Off-hand it sounds like the OS-default filepicker is not intuitive, which isn't something we can fix, but something to take up with the relevant linux distribution and/or window manager folks.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 5.15.0-56.62-generic 5.15.64
Uname: Linux 5.15.0-56-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri Dec 23 12:18:08 2022
DistUpgraded: 2022-11-26 15:02:34,980 INFO cache.commit()
DistroCodename: jammy
DistroVariant: ubuntu
DkmsStatus:
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 virtualbox/6.1.38, 5.15.0-56-generic, x86_64: installed
GraphicsCard:
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   Subsystem: Hewlett-Packard Company HD Graphics 530 [103c:8054]
InstallationDate: Installed on 2021-01-14 (708 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Lsusb:
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 Bus 001 Device 003: ID 0592:0002 Powerware Corp. UPS (X-Slot)
 Bus 001 Device 002: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
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MachineType: HP HP EliteDesk 800 G2 SFF
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-56-generic root=UUID=9dd289f2-eb84-4c73-92fb-e6050acc143d ro
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to jammy on 2022-11-26 (26 days ago)
dmi.bios.date: 07/14/2020
dmi.bios.release: 2.48
dmi.bios.vendor: HP
dmi.bios.version: N01 Ver. 02.48
dmi.board.name: 8054
dmi.board.vendor: HP
dmi.board.version: KBC Version 05.39
dmi.chassis.type: 4
dmi.chassis.vendor: HP
dmi.ec.firmware.release: 5.57
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dmi.product.family: 103C_53307F G=D
dmi.product.name: HP EliteDesk 800 G2 SFF
dmi.product.sku: L1G76AV
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