I tried to return to Mur from the aforementioned island but the boatmaster did not offer the dialog to actually go back. All I could do was refuse or whine about the price. Sternhund got me back to Mur, and I don't know if it is still happening, but I thought I should report it.

I was there two days ago and I was able to go back, although it was 100 coins (50 more)

Did you have your entire party standing on the same dock?

Entire party, including those who aren't in the same area have to be on the dock.

This happened to me recently, infact none of the boat captains would take me anywhere at all.

Logging out and logging back in a few hours later fixed it.

The only unique circumstance was that I had to log out from Lob...... while the rest of my party remained (you were there, A95). When I logged back in several hours later, I was stuck on the island.

Oh yea I remember, he logged because he had something to do and than I went back with one person (we came with 5 or 6) so that might be a problem.