Address bar malfunctions in latest update

Question

Besides the horror of all of the address lines now being blue or grey rather than white ...
Let's say you are addressing an email - I type in the first few letters 'rr' - you see a list of addresses with 'rr' in them - you click on the one you want, it appears on the address bar line - but then when you hit enter or tab, to move to the next address line, teh address you select disappears, and is replaced by the first address in the box of selections that came up.
For example, I type in 'rr' - I can see 4 addresses - I choose # 3 from the list - it appears on teh address line, then I hit enter or tab and i am moved to the next address line - but #1 in the list now replaces #3 that I selected.
This is, to say the least, a nightmare.

Answer 1

The problem is, even if I am at a new message, where I have 3 (grey) address lines facing me ... i type in 'chris', and a box shows up with 4 'chris' entries.
I select the third one down, chris henry. It appears where i want it, on the first address line. I now want to add a second recipient - if I click either tab or enter, as one always could in Thunderbird - the cursor moves to the next line - but the address on the first line switches to the first 'chris' entry.
The only way around this is to click on line 2 in the address box, rather than using tab or enter. Then Chris 3 stays in place.
However once I add a third address using this workaround - there is no way to add a 4th address to the email - because when I hit enter or tab to get a 4th line to appear - the address I selected for the third line disappears and is replaced.
The only workaround to this problem, is to type in enough of the address to get the address you want to appear in the address line, rather than clicking on it.
This makes the function of typing in a few letters and choosing the address you want useless.