godot: Crash when any script is closed

Godot 3.0 9575dbdf788e8a5154b3ec2f66913e731ac02850 Windows 10 64 bits

Godot crashes when I close a script, either with File->close menu or Ctrl+W. Interestingly, it doesn’t crash when it’s a documentation file.

Error in the console right when it happens:

ERROR: RID_Owner<struct VisualServerCanvas::Item>::getornull: Condition ' !id_map.has(p_rid.get_data()) ' is true. returned: 0
   At: d:\projets\info\godot\engine\godot_fork\core\rid.h:164
ERROR: VisualServerCanvas::canvas_item_set_visible: Condition ' !canvas_item ' is true.
   At: servers\visual\visual_server_canvas.cpp:331