I use Firefox to play NP. I’ve seen this bug in both 29 and 30. Here are the steps to replicate it.
- Select a star with a carrier.
- Use the down arrow button to transfer ships from the star to a carrier.
- Move the map. (For example, to get your destination star out from underneath the transfer dialog you just opened.)
- The Transfer and + (edit waypoints) buttons are now non-functional. Click them as much as you want, they’re not going to do anything.
The work around is to close transfer dialog and open it again.