Bug 207884

Summary:	[GTK] Duplicated vertical scrollbar
Product:	WebKit	Reporter:	Sergio Villar Senin <svillar>
Component:	WebKitGTK	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	bugs-noreply
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
URL:	https://community-tc.services.mozilla.com/tasks/UAWFTd_hTIGeOrx2SQsDuw/runs/0/logs/https%3A%2F%2Fcommunity-tc.services.mozilla.com%2Fapi%2Fqueue%2Fv1%2Ftask%2FUAWFTd_hTIGeOrx2SQsDuw%2Fruns%2F0%2Fartifacts%2Fpublic%2Flogs%2Flive.log

Description Sergio Villar Senin 2020-02-18 02:19:01 PST

The behaviour is different in Epy and MB, however is faulty in both cases.

Epy
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Steps to reproduce:

1- Open https://community-tc.services.mozilla.com/tasks/UAWFTd_hTIGeOrx2SQsDuw/runs/0/logs/https%3A%2F%2Fcommunity-tc.services.mozilla.com%2Fapi%2Fqueue%2Fv1%2Ftask%2FUAWFTd_hTIGeOrx2SQsDuw%2Fruns%2F0%2Fartifacts%2Fpublic%2Flogs%2Flive.log

2- Pay attention to the vertical scrollbar. It's duplicated. Using the mouse wheel allows vertical scrolling. The small scrollbar moves but it's impossible to click on it.

MB
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1- Open the above URL 
2- Only the small vertical scrollbar is rendered. However is impossible to click and/or interact with it.