Tables too wide for the main window scroll sideways when accessing cells
beyond the edge.
This breaks if the cell contain any kind of inset. LyX will then
jump back to the left edge, leaving you with an invisible
cursor until the cursor comes out of the inset.
I reported this long ago, but then I only saw it with math inside the
table, and math in tables isn't that common.
However, the same problem happens with anything - a note, an ERT box,
a document branch, math, box, another table, index entry . . .
Looks like the sideways offset is lost whenever the cursor goes into
something.
Tested with today's svn.
Helge Hafting
