Hello, Thanks for the bug report. The definition of the orgframe environment did not pass the overlay spec to the underlying frame environment. I believe the attached patch fixes that. Attached is an org file that appears to exercise the patch and show that it is doing the right thing. Could you confirm this, please? ---- Incidentally, I did propose that we introduce a BEAMER_FRAME property so that it could be manually set, but Ihor did not like that idea so it got scrapped. Thanks, Leo