grid view cutting text and saving balance of field

grid view cutting text and saving balance of field

when in grid view, for record "xyz", creator cuts-off long text in field "A" (for example, if text field is <2 Pack 9" Wax Finish Tapers w/ 5-Hour Timer>, then in grid view I only see <2 Pack 9>    note the <> are my brackets). 

then somewhere else on that record row I make a change in _only_ field "B".
then the record needs to be updated, but after saving the update
Creator now has only <2 Pack 9> in field A when I view the record in list view or summary view.
It did not show me balance of text in grid view for field A, and then deleted what it did not show me, even though I never clicked in field A, or did anything to field A.

Will this happen in any form?
Why is this?
How to avoid it?