Dashboard fixes are not part of the main release, they are released separately - like other nodes. They are a collection of several nodes so an update will happen when Dave(dceejay) decides to release them.
As for fixing the ui_text_input node you can install the version I just patched to check it out
open a terminal window and stop Node-RED node-red-stop
change directory to the .node-red folder cd $HOME/.node-red
enter this command npm install juggledad/node-red-dashboard
this could take a few minutes depending on the Pi
restart Node-RED and test it out.
ui_button - you can still make many changes to the buttons, you just have to use different CSS selectors. If you really want to customize them do a search using 'CSS button' and check out some of te treads like
