Example table is the Edit Problem Report > Set Attachements (but this idea is applicable to any data entry tables).
When the user resizes the columns - typically to make them longer - any data entry boxes should resize too. This is very helpful when you are working with multiple filenames and want to add specific information for each filename. At the moment the data entry box only shows the first portion of the filename (usually the folder names) which is isn't very useful. Users have to "prepare" the data before loading so that they know the correct info for each filename.