When place the cursor over the target word and use the Apple “lookup in dictionary” keystroke combo (Command + control + D) I see one of several results.
The word under the cursor is not defined in the resulting popup. A different word, typically 6 lines nearly directly and vertically above the current selection, is defined.
The word under the cursor is defined in the popup as expected, though the popup is often a few inches below the word being defined (but not always).
I only see the appropriate behavior when the word is within the first seven-eight lines of the document. If I add blank lines to move a line of text below that point, the key combo no longer works as expected (see #1).
Nothing happens. No popup or feedback of any kind. This seems to be the case when I choose a word beyond the first seven lines of text AND the word is not approximately aligned with another word 6 lines above.
This behavior occurs in a brand new, one text file project that I created to test this and other projects as well.
Interestingly, if I highlight a word and use the contextual menu, the dictionary lookup works as expected anywhere in the file.
The key combo for the dictionary lookup works as expected in TextEdit and jeditX.
I am running beta4 on an Intel Mac Pro with 10.4.8.