1782503 - The form autofill drop-down is INTERMITTENTLY cut off

Status: NEW

(Toolkit :: Form Autofill, defect, P3)

Description

[Daniel Bodea [:danibodea]]

Attachment: Screenshot from 2022-08-01 14-36-14.png

Note

• When the user uses the autocomplete drop-down, he might notice that it is cut off, not showing the information on the right or bottom.

** Found in**

• Beta v104.0b4

Affected versions

• Beta v104.0b4

Affected platforms

• Ubuntu 22
• may also repro in Windows 10, but a scrollbar appears in the drop-down.
• apparently not reproducible on Mac OS.

Steps to reproduce

1. Change the following prefs:
   extensions.formautofill.available: on
   browser.search.region: US
2. Go to browser Options, Privacy and Security section, Forms & Autofill section, click the "Saved Addresses..." button and add 1 or 2 address forms ( in "Country or Region" drop-down select United States ).
3. Load https://luke-chang.github.io/autofill-demo/basic.html
4. Make the autocomplete drop-down show up (either by mouse or keyboard).

Expected result

• The drop-down is properly displayed.

Actual result

• The drop-down is SOMETIMES cut off, either the right side or the bottom.

Regression range

• will investigate asap.

Additional notes

• This issue may also be seen on Windows 10, also intermittently. It appears not to be related to bug 1383744 because it occurs with 3 addresses.
• It appears to reproduce more easily on the fields where the autocomplete options are short, but it also reproduces on other fields.

Comment 1

[Daniel Bodea [:danibodea]]

Attachment: Screenshot from 2022-08-01 14-41-12.png

Another case in Ubuntu 22.

Comment 2

[Daniel Bodea [:danibodea]]

Attachment: win10 similar issue.png

A similar case in Windows 10.

Comment 3

[Sergey Galich [:serg]]

Daniel, can you let us know your monitor setup? 2K/4K? What DPI setting and scaling are you using? Does zooming in or out in browser affects failure rate?

Can you attach information from about:support as well? Thank you!

Comment 4

[Daniel Bodea [:danibodea]]

I have 2 monitors Dell P2419H 1.920 x 1.080 (1K) on 60 Hz set on 100% scaling. Zooming in/out does not seem to influence the reproduction of the issue, however, refreshing the page and immediately opening the autocomplete drop-down DOES seem to reproduce it, at a higher rate.

Moreover, after completing a Preliminary testing run of Form Autofill + Autocomplete, I can say that the issue does not really occur in real case scenarios, or, a user is not likely to refresh the form page very often.

It has also reproduced in Firefox Release v103.0.1 so it is not a regression of the latest refactor to Gecko work.

Comment 5

[Daniel Bodea [:danibodea]]

Attachment: about:support informaion from my system.