Still happening in Version 0.99.113.2.2-rc (WebKit 614.1.12)
have a few tabs open and loaded.
open a new tab and type an address from history (ie that autocompletes). hit return to load the site.
Now close that tab, go to a previously opened tab and click in the address bar to the right, so the cursor is after the address and the address is not highlighted.
Now hit return:
I expect this address to reload, but the address in the closed tab is loaded instead.