Interesting. I've never heard of this issue before. I have an unlined 4 string and a lined 5 string. I switch back and forth all the time. I just need to regularly play the unlined one, to feel comfortable on it.
The only thing that throws me, as some others have mentioned, is when they put side dots, where they would be on fretted instruments, as opposed to where the lines would be. I don't get the purpose of that at all. I have a custom F Bass 5-string fretless on order and I made sure to tell them to put the side dots where the frets would be.
And I continue to be amazed at people who can play by ear and rarely look at their hands. A lot of the songs that I play have a lot of notes in them, and no way, no how, could I effectively keep making micro-adjustments all the time to keep in tune.
The only thing that throws me, as some others have mentioned, is when they put side dots, where they would be on fretted instruments, as opposed to where the lines would be. I don't get the purpose of that at all. I have a custom F Bass 5-string fretless on order and I made sure to tell them to put the side dots where the frets would be.
And I continue to be amazed at people who can play by ear and rarely look at their hands. A lot of the songs that I play have a lot of notes in them, and no way, no how, could I effectively keep making micro-adjustments all the time to keep in tune.