Laser Filter and Hector Mapping Issue

Hi all, I recently implemented the `angular_bounds_filter` from the `laser_filters` package to hector SLAM for map building. I decided to limit my RPLidar A2 laserscan from 360deg to 180deg. However, by doing so, when I launch Hector mapping, there seems to be a high tendency of drift and multiple warnings of `SearchDir angle change too large`while I see my frame on RVIZ jump around. All this happens while my robot is stationary. Is there a reason why this is happening? This particular filter is also not documented on the `laser_filters` wiki page too .