1524527 - [Gmail] Duplicated horizontal scrollbar in compose window for long strings

Status: NEW

(Core :: Layout: Scrolling and Overflow, defect, P3)

Description

[Alexandru Trif, Desktop Test Engineering [:atrif]]

Affected versions

• Nightly 67.0a1 (20190131093752)
• Firefox 66.0b3 (20190128143734)
• Firefox 65.0 build2 (20190124174741)

Affected platforms

• Windows 10 x64
• Ubuntu 18.04
• macOS 10.11.6

Steps to reproduce

1. Launch Firefox and go to https://mail.google.com.
2. Login with valid credentials.
3. Click “Compose” to compose a new email.
4. Paste a long string in the email body (e.g. this link “https://bugzilla.mozilla.org/show_bug.cgi?id=150510”) until the vertical scrollbar from the “New message” window appears.
5. Type random text at the end of the pasted text until the horizontal scrollbar appears.

Expected result

• One (or no) horizontal scrollbar appears.

Actual result

• The horizontal scrollbar is duplicated and overlapped.
• Attached a screen recording with the issue: https://drive.google.com/open?id=1EXE8kl-tmg8erQcaii-pfxsAywxIlFHP.

Regression range

• I tried to search for a regression but with no luck because the issue is reproducible all the way back to Firefox 36.0a1 (2014-11-02) - this is the last version of Firefox that can display the compose window .

Additional notes

• I investigated this behaviour on Chrome and I noticed that no horizontal scrollbar appears in the compose window regardless how long the inserted string is.