Increase size of dropdown boxes

I am finding that the drop down boxes very limited when you type in your customer or supplier names when entering a sales invoice or purchase invoice.  In this case you have to keep clicking 'Load more'.  You should be able to just scroll through the total list.

This also applies to the Account code while entering a sale or purchase.  This drop down box is very limiting and only shows three account codes at a time.  It is way too small. Very disappointed in this.