User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0 Build ID: 20141116004002 Steps to reproduce: about line 646 of time-funcs.js in http://Jesusnjim.com/calculators/time-diff.html any long line that needs scrolling look for hard-to-find horizontal scroll bar hover mouse over a variable on same line (watch offer activates) try to scroll Actual results: scroll and watch offer stuff both work at same time, wondering if these will conflict. hope not. h scroll hard to see, didn't know it was there until today. theme is low contrast and darkish, making display hard to read, I have to squint up close to monitor. Expected results: lines and scroll should be separate, dark theme should be light theme with standard high contrast.

I'm not sure if this is an issue we should address this or not. Brian, what is your opinion?

Jim, can you please post a screenshot of what you are seeing? Also, are you seeing this with the light theme, dark theme, or both?

I don't see thgis anymore. must have gotten fixed. it was really strange. dark theme. light theme works fine and has normal scroll bars. the scroll bars in dark theme are in a layer over the code. looks interesting visually, but hard to mouseover since they are so thin and you can't select the text in the layer behind the scrollbars.

oops. yes, I do see this, sorry for confusing message. ignore the first line. in comment 3.

https://www.dropbox.com/s/38cee0nkkduyk8z/debugger-scrollbars-dark-theme.png?dl=0 works OK. kind of difficult to discern the horizontal scrollbar though, the text selection color overrides the scrollbar color.

(In reply to Jim Michaels from comment #5) > https://www.dropbox.com/s/38cee0nkkduyk8z/debugger-scrollbars-dark-theme. > png?dl=0 > works OK. kind of difficult to discern the horizontal scrollbar though, the > text selection color overrides the scrollbar color. please attach images and other files to bugs, so that future generations can have full context of the details :)

that was an attached image, on dropbox.

reposted as attachment

Please confirm that this annoying bug is indeed a desired user experience.

Scrolling without wheelmouse always sucks. I opened Bug 1263105 to use <shift>+mousewheel for horizontal scrolling which would really mitigate the issue that scrollbar(s) are hard to find in devtools (because (good!) they are small due to tiny space available).

There's a thread in discourse about the scrollbars: https://discourse.mozilla-community.org/t/scrollbar-differences-between-light-and-dark-themes/13403/10 I don't think it arrived at a conclusion though.