I have 3 fedora machines, 2 laptops and a desktop. All three were installed with the Xfce spin probably Fedora 20, and updated with fedup to 21 (worked fine) and then to 22.

All three machines are having some display issues with some programs. Firefox no longer draws borders around text entry fields in the browser, the OK / Cancel buttons on Eclipse workstation selection splash screen are there and active, but invisible.

I'm using one of the default Xfce themes, I've tried other themes too. I downloaded the stand-alone Eclipse Mars package, installed it and same problem. I used dnf to reinstall the xfce groups, and even installed gnome desktop group. Nothing has helped.

I suspect there is some little graphic piece that was never installed with the original xfce spin, therefore never updated and recently adopted with the f22 software. I believe f22 went to gtk3+

Anyway, anyone have any ideas how I could go about tracking down this problem? I'm not interested in re-installing fedora completely, I would like to find and fix this glitch.

Laudable. What I'd do is delete any Desktop Environment caching and configuration files and see if the problem persists (or test with a clean new user profile), look at ~/.xsession-errors and related log files, maybe 'strace' a simple (== minimal resources) app like Mousepad for clues and check LQ / Fedora Bug Tracker / XFCE users mailing list archives for related issues?

Thanks for the suggestions, I'm planning to spend some more time on this issue over the weekend.

Problem solved. One of the themes in the gtk-xfce-engine package caused the display problem. Of course it was the theme I'd been using for years. It didn't survive the fedora 22 fedup update though, so I'm using another theme thad works (Crux)

One thing I found while working on this, except for some menu clutter it's easy to have multiple Desktops installed. I now can choose from Xfce, LXDE, Cinammon, or Gnome when I log in. All except Gnome worked with minimal hassles.