Whenever I try to edit an  address the cursor jumps to the end of the input field after one character and needs to be placed back to enter the next character, then it jumps again, and so on...

Reproducible: Always

Steps to Reproduce:
1. Compose a new mail
2. Pick a receipient address
3. Edit that address
Actual Results:  
Cursor jumps to end after one keystroke.

Expected Results:  
Cursor stays where it is to allow continuous input of characters

I 've selected Arch packages, but I've seen the problem in other distributions, too