Same. I've reported this to LastPass tech support repeatedly. I've received no meaningful feedback from LastPass that it's something they plan to fix. My guess is that it has something to do with the way that the Chrome extension store works, and the security needs of an extension like LastPass, but it REALLY seems like it ought to be possible. For example, by storing LastPass extension preferences INSIDE the LastPass vault, so that even if the settings must be lost at each update, once the user logs back in the preferences should be restored.
Although that wouldn't fix another of the infuriating problems with the current LastPass Chrome extension, which is the requirement to use 2-factor authentication and re-check the remember/trust this browser even on a browser where that's been done a day and ten days and a month and three months and, etc, before!