Pressing enter opens the log box in the bottom left, just press enter again to exit it. Like you said it locks in your last action so you can use this to your advantage to auto run in towns or villages. This is intended and not a bug.I am trying out e1.6.1 but I have a blaring issue that I cannot seem to fix and it's quite annoying.
Whenever I press any of the buttons, T, Enter, Backslash, and probably a few others, it brings up some chat window.
This then blocks all input from other buttons and my character gets stuck doing the last thing (such as walking forward).
This also likes to randomly result in a hard crash when attempting to close it.
Worth is a stat that you must achieve like the others (weight, weapon reach, etc.). Try making it out of better stuff.