For the last few releases (maybe since 0.140 or so?) ctrl-k has started behaving differently: when pressed, nothing happens immediately, but then about 1 second later, the cut actually takes effect.
However, if the cursor is moved immediately after the ctrl-k, the cut takes effect immediately. (i.e. the cut happens after ~1 second has elapsed or the cursor is moved, whichever happens first.)
Is there some way to fix this?