Thanks for bringing this up. Our customer service representatives have seen this a few times with Internet Explorer. Unfortunately, there are no settings to tweak that can fix this. If Last Pass is a must, another browser is the solution. Of course, if Internet Explorer is a must, Last Pass is no longer an option.
This is not something we intend to leave as is. It may take time to address it though as there are other updates that may take priority.
I can use Chrome so its not a showstopper, just an annoyance to have to switch browsers when I need to login to a website.
I have a ticket open with LastPass, and they are trying to contact CE to determine if there is anything they can do to correct the problem. Does CE intend to respond to them and try to help them solve it from their end?