1883041 - Message List displays a vertical scrollbar when not required

Status: RESOLVED FIXED

(Thunderbird :: Folder and Message Lists, defect, P2)

Description

[Anje]

Windows 10 OS
beta 124.0b1

In both 'Table View' and 'Cards View'
Whether using 'View' > 'Layout' > 'Classic' or 'Vertical'

If Message List contains few emails so a blank area is seen below list:
Actual Results

• There is a scrollbar on the right.
• This scrollbar is only the background section showing chevrons top and bottom.
• It does not contain the moveable part of a normal scrollbar.

Expected Results

• No scrollbar.

This issue has also been reported in the Support Forum. That user is using the current release 115.8
https://support.mozilla.org/en-US/questions/1441186

Note: This does not occur in version 102.15.1

Comment 1

[Wayne Mery (:wsmwk)]

I do not see this on Mac nightly.
I do see this on Windows 115.
Heather, do you see this on Linux?

Comment 2

[Heather Ellsworth]

I tested the tarballs on fedora and tested the default cards view (the vertical list pane). The only scrollbar I see is on the actual message (rightmost pane) and only if the message is long enough to warrant a scrollbar. So I don't see this issue on linux 125.0b1 nightly, nor on the 124.0b1 version in the initial report.

Comment 3

[chrizilla]

can reproduce for table view in
TB 115.6.1 @ Win10-64bit
TB 129.0a1 (2024-06-28) (64-bit) @ Win10-64bit

Comment 4

[Alessandro Castellani [:aleca]]

Could we add some screenshots?

Comment 5

[Alessandro Castellani [:aleca]]

Attachment: Screenshot 2024-07-04 095850.png

Are you talking about this?

Comment 6

[Alessandro Castellani [:aleca]]

Attachment: Bug 1883041 - Use overflow auto instead of scroll to ensure no scrollbar is visible when the content doesn't need it. r=#thunderbird-front-end-reviewers

Comment 7

[chrizilla]

Attachment: permanent vertical scrollbar.png

adding requested screenshot
image content: permanent vertical scrollbar in TB 115.6.1 @ Win10-64bit with added statements from comment #0 as annotations.

Comment 8

[Alessandro Castellani [:aleca]]

Thanks for the screenshot, this confirms my suspicion.
I uploaded a fix for it.

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/3f1f73c4f73e
Use overflow auto instead of scroll to ensure no scrollbar is visible when the content doesn't need it. r=freaktechnik,arschmitz