"Corner pull" and "remember size and position"

I’ve using Bitwarden for some years now and to me as being an ordinary user (I’d guess) a few basics are completely missing.
In most writabel text fields on the web there’s a small “corner pull”, but not in the Bitwarden addon where’s really needed badly. I takes some effort to catch the edges of the add-on fold-out to extend the size.
Also I miss a “remember size and position”, 'cause you’ll have to do the above all over again next time you intend to use the add-on.
For reference I’m using FireFox.