Hi, for some time (since early versions of kde4) I have remapped shortcut for edit location in Dolphin to Alt+D (instead of Ctrl+L) to match shortcut in web browsers. However in recent versions this shortcut is blocked in case path contains folder beginning with "D" - it shows dialog about ambiguous shortcut and nothing happens. I noticed that Alt+[char] now by default opens popup menu with subdirectories of folder beginning with [char]. I don't know how long is there this functionality, but I think it should not collide with explicitly defined shortcuts. Reproducible: Always
Confirmed the issue. But I'm not sure this is really fixable; in general, using the Alt key as the only modifier for a shortcut is dangerous because it risks collision with menu accelerators. Or other hidden functions, as you've discovered. I don't think we have a sane way to fix this. FWIW, all modern web browsers use Ctrl+L to focus on the URL field.