For a comprehensive list of other examples of issues with item positions in the Creative inventory, click here.

All tickets associated with item placement in the Creative inventory are valid for cases introduced in 1.16 and later as per this comment. Exceptions exist, which are valid for their own reasons.

The bug

Currently, the Creative inventory does not group beds and respawn anchors next to each other, despite both having extremely similar functions (setting a player's spawn).

How to reproduce

1. Open the Creative inventory
2. Locate beds in Decoration Blocks
3. Locate Respawn Anchor in Decoration Blocks
4. Note that there is a considerable distance between these items