I am basically copying information from this https://bugzilla.redhat.com/show_bug.cgi?id=1285070 fedora gtk3 bug in case this is a Firefox and not a gtk3 issue. Description of problem: Using gtk 3.19.2-1, the trough of scrollbars is rendered and colored correctly, but the scrollbar itself is either not rendered, or it's rendered as the same color as the trough. Interestingly enough, it *does* think the scrollbar is there, because grabbing and dragging or clicking the invisible scrollbar works. Reverting back to 3.19.1-1 makes it work again. Version-Release number of selected component (if applicable): gtk3-3.19.2-1.fc24.x86_64 How reproducible: On a box with 3.19.2-1 installed, launch firefox, and hit a page that should have a scrollbar on it. Appears to be related to the 3.19.2 move to CSS - guessing that some CSS file is missing a specification for the scrollbar, or a wrong name for the node, or something....

I am resolving this bug as invalid because the GTK3 developers understand the issue and it is on their side.

I reopened this because it seems the fix they did was to Mozilla and NOT GTK code.

Needs to be fixed for Gtk3.20.

This bug is a combination of missing rendering and wrong thumb size. The rendering can be fixed by CSS nodes and size patch is attached here.

Comment on attachment 8732125 [details] [diff] [review] slider size WIP patch This is just FYI, it's not working without node CSS implementation.

On ArchLinux the scrollbars are fully grey since I've updated to GTK 3.20. Not sure if related.

Firefox 46, GTK 3.20.3, scrollbars are still transparent. Interestingly only theme that showed the scroll bar was a Raleigh gtk 2.0 theme from 2001.

Adding flags as per dup bug 1267030. Presumably this impacts 49 as well.

I'm on Archlinux with gtk 3.20.3/firefox 46.0 I have a visible scrollbar, but there is some problem with selected text's background color, as I reported [here](https://bugzilla.mozilla.org/show_bug.cgi?id=1263569) But If I download firefox from mozilla's website. selected text's background color problem is fixed,but scrollbar is invisible.

This should be addressed by https://hg.mozilla.org/integration/mozilla-inbound/rev/827f631db4de

Tracking in the duplicate bug. This should be fixed in 49 and possibly will make it into 48 or 47.