Just so folks can see what I am talking about, I have attached a quick screen shot. The upper portion of the text block has been adjusted back to the original condition. The lower portion, below the word "Keynotes" is what the update did to all my text blocks.
There appears to be a tab added to the text blocks that was not there prior to the update. Smaller instances of text within the drawings does not appear to be affected, however, I really use tabs there.
With respect to the slow down, it used (just before lunch when I updated) to be that I would double click on a block of text and be able to edit almost instantly. Now I have to try to select a block of text multiple times, I get the spinning beach ball, then if I am lucky the text block opens up, then a series of spaces are added to the text block, I can delete the added spaces and can start adding, deleting, or formatting my text.
I may have to uninstall and go back to the prior version.
Erich
AC 19 6006 & AC 20
Mac OS 10.11.5
15" Retina MacBook Pro 2.6
27" iMac Retina 5K