Hi, I've updated phabricator today and noticed that all inline comments were migrated to new format.

That however had some unfortunate side effects for me:

• inability to reply to inline comments (when I hit Reply on the inline comment controls gets grayed out and HTTP 500 is received on AJAX request that attempted to open new comment writing form):

{F181217}
The 500 error caused by this Fatal Error shown in AJAX response body:
{F181220}

• inability to delete inline comment (I add comment and immediately try to delete it) - same .../diffusion/inline/edit/PHID-CMIT-22elkr5ihychghvaxsko/ is accessed and same Fatal Error