**UPDATE** When doc extension absent.....Tab not expanding Emmet on iPad with most current iOS

UPDATE:

Dear Alexander, I apologize, I misunderstood what I was seeing.  It appears that tab indeed works just fine but only when doc extension is present (such as .html or .php).  I had created a new document without extension and emmet did not work with tab.  That does not seem to be a problem at all.  

Previous Assumption

I used to be able to expand Emmet with tab in Textastic, but can no longer do that.  I must use CTRL + E.  I’m using iPad Pro 2nd gen, running most current iOS and using Apple smart keyboard....so there is no option of keybinding.  I assume this is a bug since I used to be able to expand with tab not very long ago...a few weeks?