Players can be permanently prevented from respawning by trapping their bed

Make Dangerous Blocks Obstruct Beds

Blocks that harm players could be added to the list of blocks that players are not able to respawn on. If all of the blocks near a bed are obstructions, then the player will respawn at world spawn. This is the solution that was chosen to fix MC-176640.

• This solution might slightly increase code maintenance in the future because every time a new dangerous block is added to the game, it will have to be added to the list of blocks that obstruct beds.

• This solution does not prevent all possible infinite death cycles. Clever griefers will design bed bans that kill the player without the player respawning in a block that obstructs beds. See the "To reproduce" section for examples.

• This solution might limit the creative freedom of players because sometimes there are situations where a player might want to respawn inside of a block that is usually dangerous. For example, water usually drowns the player (see MC-187495), but a player might have an underwater base with a conduit in which the player would want to respawn in water.

Detect Frequent Respawning

The game could detect when a player dies multiple times in a short amount of time and then automatically respawn the player at world spawn instead of at his/her bed.

This would likely have many false positives, where the player was not actually trapped in an infinite death cycle. For example, a player might die repeatedly while playing a minigame, and the player would be annoyed to suddenly respawn at world spawn instead of at the bed in the minigame.

Add "Respawn at World Spawn" Button

A new button called "Respawn at World Spawn" could be added to the death screen. After dying, the player would have the choice between clicking "Respawn" to respawn at his/her bed (if a spawn point has been set) or "Respawn at World Spawn" to respawn at world spawn.

• A player could abuse this button to quickly teleport between world spawn and his/her base by putting all of his/her items in an enderchest, dying, and then respawing at the desired location.

• This solution would not work if the doImmediateRespawn game rule is set to true because the death screen isn't shown when that game rule is true.

Add "Reset Spawn Point & Respawn" Button

A new button called "Reset Spawn Point & Respawn" could be added to the death screen. After dying, the player would have the choice between clicking "Respawn" to respawn at his/her bed (if a spawn point has been set) or "Reset Spawn Point & Respawn" to permanently change his/her spawn point to world spawn before respawning. The player would need to right-click his/her bed again if he/she wants to start spawning there again.

• This solution is similar to the previous solution, except that it prevents abuse. The player's spawn point is permanently reset to world spawn until the player right-clicks on a bed (or respawn anchor) again.

• This solution would be effective against all bed ban designs (except when the doImmediateRespawn game rule is set to true) because it lets the player respond when he/she is in an infinite death cycle.

• This solution would not work if the doImmediateRespawn game rule is set to true because the death screen isn't shown when that game rule is true.