Using: Fedora 26, LibreOffice v5.3.7.2, ODS format.
Normally I would be able to left-click a sheet at the bottom of a Calc document, and it would switch sheets. The issue is when a sheet is left-clicked, the sheet will change to the desired selection, but will also grab onto the sheet and be attached to the mouse. This means I need to hit ESC to release the contents, left-click onto the sheet contents to release the contents, or left-click on the sheets bar which rearranges the sheet order.
Could there be a Libre setting, which affects this behavior?