Let me relate a way that auto fill can be an annoyance. I use a VOIP ATA from Obihai for my phone service and my service for voice is Google Voice. I needed to add E911, so I decided on a VOIP company, Anveo. I went through a process that would auto config the service in my ATA setup. Every time I tried to view the setup I kept seeing information populated in the fields of description that shouldn't have been there. I complained to Anveo, but eventually realized LastPass was entering my login credentials for the ATA dashboard in the user and password fields of the setup for the Anveo E911. I was already logged into the dashboard using those credentials and that is the only time they should be used on the site by LastPass. This was very vexing and took a while to resolve. The whole time I was getting frustrated Anveo had already sent the correct SIP credentials to my ATA for their E911 service. The only way I can view the actual descriptive fields for the E911 setup is to disable LastPass auto fill temporarily.