Eclipse ctrl+right does nothing

Eclipse's welcome screen causes this kind of bug in the editor specifically (https://bugs.eclipse.org/bugs/show_bug.cgi?id=426557). Sometimes you can find that when you restart can't move with control+arrow in the editor but you can in other views like console window.

You can disable welcome screen ( in most eclipse based IDEs it's a checkbox in the welcome screen ) and then restart eclipse just to be sure it won't happend again. Everything will work again.

I had an issue just like this with Eclipse Neon. I was baffled by answers I was finding about the welcome screen, but I disabled it, and apparently that was causing the issue, because Ctrl+Shift+Right/Left worked, after disabling it. In Neon, the welcome screen has an "Always show Welcome at startup" box you can uncheck, in the lower right corner of the welcome screen when it appears. After unchecking it, selecting words worked, again. Somehow.

I've got the same problem with Eclipse-Oxygen and disabling the welcome screen fixed the issue. I gave this answer just to confirm the solutions explained above also work for the following eclipse version;

1: Eclipse-Oxygen Version: Oxygen.1a Release (4.7.1a) (released on October 2017)

2: Version: Oxygen.3a Release (4.7.3a) Build id: 20180405-1200