Affects Version/s: Minecraft 19w09a
Fix Version/s: None
Game Version: Java Edition 19w09a
Game mode: Singleplayer Survival
Item in hand: Stone Pickaxe (results same with any pickaxe)
Door type: Oak (untested with others, but same results expected as only difference between doortypes are just texture changes, except for Iron doors)
There is a bug with the doors, which has been marked as "resolved", but it still appears in game.
If you open/close a door with a pickaxe in hand only the other half of the door opens.(Screenshot in attachments)
This bug is nothing serious except if it appears in Multiplayer, as this can get annoying in some situations.