Fix bug with scrolltop being negative
Revert "fix and test an issue where scrolling a few elements upwards in virtual list with space below causes errors"

This reverts commit f7d92235f1a604d90644b6a4911fdf13c71a30de.
d48fea48e6f57e257bb70ee446e27903ec38a83e fixes the cause.
Merge pull request #105 from teddyzeenny/negative-scrolltop

Fix bug with scrollTop being negative