Up arrow key will not exit table cell. Why?

L

LurfysMa

Every once in awhile, I find that the up arrow key (and less often the
down arrow key) will not take the cursor out of a table into normal
text. The left arrow key will. I can't see anything unique about these
cells. When it just happened, the cells happened to have "Keep with
next" set, but I don't think that is always true.

Can anyone suggest what setting I accidentally invoked?

Thanks
 
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