KEY - Display more than 20 characters from the title in the list
Currently the list only displays the first ~20 characters from the entry title regardless of window size. Where a user has a number of entries with similar text for the first 20 characters then deciding which one to click on is difficult. Colouring is useful, but unless you always remember which colour refers to the account you want then this only helps a little.
Currently 5.1.1852.0 allows the vertical splitter to be moved left and right, but this only limits the width of the entry information; it does not change the number of characters displayed in the list for the entry title. This splitter position is also reset whenever the vault is unlocked.
My suggestion is to either
a) Add an option to give the user the choice of whether the split between the list and the entry information is vertical or horizontal so that they can use the whole width of the window for the list if they so choose (list displayed in top-half, entry information in bottom-half).
b) Enhance the current vertical splitter to update the number of characters displayed in the list dependent on how much space is available, and also remember the position of the splitter between uses rather than resetting when the vault is next unlocked.