New editing restrictions?

[printbus]

Further experimenting indicates posts that originated more than about four months ago can no longer be edited. Maybe that restriction has always been there, and I'm just lucking into editing posts that old. If that's the way it is, should the EDIT POST option still be appearing?

[printbus]

More insight, based on additional experimenting with other posts where I also have the editing restriction. The common denominator may be inline images. It seems presence of any inline images requires post edits to be saved in advanced mode.

EDIT: Having those inline thumbnails now expanded to full size images is going to take some getting used to.