Cannot select single cell in Calc autofiltered table

I have some data in a Calc spreadsheet that I keep autofiltered. After I’ve been making changes for awhile in the file, sometimes I cannot click one single cell – a left mouse click autoselects two cells (one cell and the cell below it). I have to use keyboard arrows to get to the cell that I need. My coworker also experiences this problem. We are both using Windows 7/LibreOffice Has anyone else experienced this issue? Does anyone know how I can resolve it, or what other information you may need to help troubleshoot the issue? This has been occurring in ODS files, not xlsx.