LR 5.0 on a Mac (tried both Mac Mini, MacBook Pro and MacBook Air - all running 10.8.4).
When I run a slideshow and pause it, the arrows keys to go backward/forward are not working.
Created a "testuser" account (so no LR prefs that have been inherited) and copied over a test catalog.
Same issue.
Also installed it on work laptop where I've never used LR. So no old "cruft" on account or inherited.
Same issue. I use the slideshow module to pick/rate/flag and therefore have paused and gone back and forth while the slideshow was paused (e.g. to change rating on previous photo), then resume.
Bug? Workaround available?