Please note that having a designated patch installed will not guarantee that the issue it was supposed to fix will be fixed upon entering game.
Extra details on specific platforms can be found on the related pages: PC, PS4, and Xbox One. You can find out about your version in the lower left corner of the 'System' screen (Esc on PC, Start then selecting 'System' on console). Upgrading Skyrim to the latest patch is usually recommended, as many bugs and glitches are often fixed by the patches.
This page lists all patches released for the Special Edition. 1.8.3 Specific Fixes and Balance Adjustments.