Just about everything to do with text in LR is hopeless and very difficult to use. It is almost like text was an afterthought in LR1, and nobody has ever looked at it again to sort it out.
Adobe spend all their efforts on soft-proofing, lens corrections, better RAW process (all of which are of course wonderful and much to be admired) but they can't seem to get around to fixing these simple things which are such major irritants. For example, why isn't "Rename Image" on a right-click, where you would expect to find it? There are loads of little things like this which just need tidying up.
John