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When I visit certain https sites from the LastPass browser on Android 4.3, LastPass crashes!
Unfortunately this is a bug in the WebView control that LastPass uses, provided by Google as part of the Android SDK. Unfortunately there is nothing we can do to prevent LastPass from crashing, because it crashes in a browser worker thread which we do not control. However it appears there will not be a fix provided by Google until Android 4.4. You will need to utilize another browser for the mean time and use the Copy Notifications or LastPass Input Method to autofill your data from LastPass in a browser outside of the mobile app.