Hey there,
I can't use any time selection with the latest Reaper and OSX 10.11.4. I can't drag it with LMB (left mouse button) in ruler, or "above" tracks, shift + double LMB on a clip doesn't work as well.
I already checked the actions and the mouse modifiers in prefs. Everything as always.
Any ideas how I get my time selection back to Reaper? Is there any known bug?