1610782 - The scrollbar thumb in PDFs are almost invisible (dark grey on dark grey)

Status: RESOLVED DUPLICATE of bug 1575914

(Core :: Widget: Gtk, defect)

Description

[Martin]

Attachment: Screenshot from 2020-01-22 12-21-15.png

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:74.0) Gecko/20100101 Firefox/74.0

Steps to reproduce:

Go to a PDF big enough to have a scroll bar (for example, https://www.uio.no/studier/emner/matnat/ifi/INF5110/v20/slides/03-grammars-script.pdf)

This is reproducable in both Firefox Trunk (74.0a1 2020-01-20) and in the stable release (72.0.1) in Ubuntu, using the default Ubuntu theme and any of the standard Firefox themes.

Actual results:

The scrollbar's thumb (the little knob indicating your position in the document) is almost exactly the same color as the background (#6e6e6e vs #636363), rendering it almost invisible.

Attached is a screenshot showing the issue. If you zoom in and squint, you may be able to see the scrollbar thumb.

Expected results:

The thumb should be easily visible.

Comment 1

[Martin]

Actually, this is probably a duplicate of https://bugzilla.mozilla.org/show_bug.cgi?id=1575914