Please don't overlook Bug 2818: <http://bugzilla.lyx.org/show_bug.cgi?id=2818>
For me, at least, this is a clear regression in inserting citations (which in 1.4.3svn must be done twice).
Also there's Bug 2817, which is a reemergence of the problem of the spellchecker skipping the first misspelled word: bug 2218 (at least its symptom) is back.
<http://bugzilla.lyx.org/show_bug.cgi?id=2817> Bennett