I'm trying to test the ability of a workspace to remember bookmarks correctly and noticed this. Don't know if you'll be able to reproduce this but it's reproducible for me. If I have a bookmark at the end of the first non blank line in a file and the line is longer than around 23 characters, when slick goes to the bookmark (e.g. with next-bookmark) it scrolls the window horizontally so that the first visible column is now something like col 24 or whatever. A horizontal scrollbar pops up, full scrolled to the right. Only seems to happen for the first non blank line.
/******************************************************************************
*
Well now with some more testing, after deleting a few characters and setting a bookmark halfway along the line, the problem stopped happening on that line, so I created a new first line - and now the problem is on the second line (which used to be the first line).
Just noticed another problem - I have about 16 bookmarks in this workspace. If I'm on the above two lines and do next-bookmark 3 or 4 times, then prev-bookmark 3 or 4 times, I would expect to get back where I started. But I don't - it goes diving off somewhere else.